Sammanställning övningar
Sommarmatte 1
(Skillnad mellan versioner)
Versionen från 21 juni 2007 kl. 14.35 (redigera) KTH.SE:u1xsetv1 (Diskussion | bidrag) (→Övning 2.1:5) ← Gå till föregående ändring |
Nuvarande version (17 juli 2007 kl. 13.17) (redigera) (ogör) KTH.SE:u1zpa8nw (Diskussion | bidrag) |
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(31 mellanliggande versioner visas inte.) | |||
Rad 1: | Rad 1: | ||
__NOTOC__ | __NOTOC__ | ||
- | ==Övning 1.1:1== | + | [[övn 1|1 Numerisk räkning]] |
- | <div class="ovning"> | + | |
- | Beräkna (utan hjälp av räknedosa) | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="50%">3-7-4+6-5</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="50%">3-(7-4)+(6-5)</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="50%">3-(7-(4+6)-5)</td> | + | |
- | <td class="ntext">d)</td> | + | |
- | <td class="ntext" width="50%">3-(7-(4+6))-5</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | <div class="svar"> | + | [[övn 2|2 Algebra]] |
- | <table width="100%" cellspacing="10px"> | + | [[övn 3|3 Rötter och algoritmer]] |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="50%">-7</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="50%">1</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="50%">11</td> | + | |
- | <td class="ntext">d)</td> | + | |
- | <td class="ntext" width="50%">1</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | [[övn 4|4 Trigonometri]] |
- | + | ||
- | ==Övning 1.1:2== | + | |
- | <div class="ovning"> | + | |
- | Beräkna (utan hjälp av räknedosa) | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="50%">(3-(7-4))(6-5)</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="50%">3-(((7-4)+6)-5)</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="50%">3\cdot(-7)-4\cdot(6-5)</td> | + | |
- | <td class="ntext">d)</td> | + | |
- | <td class="ntext" width="50%">3\cdot(-7)-(4+6)/(-5)</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | <div class="svar"> | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="50%">0</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="50%">-1</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="50%">-25</td> | + | |
- | <td class="ntext">d)</td> | + | |
- | <td class="ntext" width="50%">-19</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | ==Övning 1.1:3== | + | |
- | <div class="ovning"> | + | |
- | Vilka av följande tal tillhör de naturliga talen? heltalen? | + | |
- | rationella talen? irrationella talen? Förenkla först! | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="33%">8</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="33%">-4</td> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="33%">8-4</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">d)</td> | + | |
- | <td class="ntext" width="33%">4-8</td> | + | |
- | <td class="ntext">e)</td> | + | |
- | <td class="ntext" width="33%">8(-4)</td> | + | |
- | <td class="ntext">f)</td> | + | |
- | <td class="ntext" width="33%">(-8)(-4)</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">g)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle \frac{4}{-8}</td> | + | |
- | <td class="ntext">h)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle \frac{-8}{-4}</td> | + | |
- | <td class="ntext">i)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle \frac{\sqrt{2}}{3}</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">j)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle \Bigl(\frac{4}{\sqrt{2}}\Bigr)^2</td> | + | |
- | <td class="ntext">k)</td> | + | |
- | <td class="ntext" width="33%">-\pi</td> | + | |
- | <td class="ntext">l)</td> | + | |
- | <td class="ntext" width="33%">\pi+1</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | <div class="svar"> | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | <tr align="left" valign="top"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="33%">naturliga talen, heltalen, rationella talen</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="33%">heltalen, rationella talen</td> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="33%">naturliga talen, heltalen, rationella talen</td> | + | |
- | </tr> | + | |
- | <tr align="left" valign="top"> | + | |
- | <td class="ntext">d)</td> | + | |
- | <td class="ntext" width="33%">heltalen, rationella talen</td> | + | |
- | <td class="ntext">e)</td> | + | |
- | <td class="ntext" width="33%">heltalen, rationella talen</td> | + | |
- | <td class="ntext">f)</td> | + | |
- | <td class="ntext" width="33%">naturliga talen, heltalen, rationella talen</td> | + | |
- | </tr> | + | |
- | <tr align="left" valign="top"> | + | |
- | <td class="ntext">g)</td> | + | |
- | <td class="ntext" width="33%">rationella talen</td> | + | |
- | <td class="ntext">h)</td> | + | |
- | <td class="ntext" width="33%">naturliga talen, heltalen, rationella talen</td> | + | |
- | <td class="ntext">i)</td> | + | |
- | <td class="ntext" width="33%">irrationella talen</td> | + | |
- | </tr> | + | |
- | <tr align="left" valign="top"> | + | |
- | <td class="ntext">j)</td> | + | |
- | <td class="ntext" width="33%">naturliga talen, heltalen, rationella talen</td> | + | |
- | <td class="ntext">k)</td> | + | |
- | <td class="ntext" width="33%">irrationella talen</td> | + | |
- | <td class="ntext">l)</td> | + | |
- | <td class="ntext" width="33%">irrationella talen</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | ==Övning 1.1:4== | + | |
- | <div class="ovning"> | + | |
- | Ordna följande tal i storleksordning | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="100%">\displaystyle 2,\ \frac{3}{5},\ \frac{5}{3}\ och \ \displaystyle \frac{7}{3}</td> | + | |
- | </tr> | + | |
- | <tr> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="100%">\displaystyle -\frac{1}{2},\ -\frac{1}{5},\ -\frac{3}{10}\ och \ \displaystyle -\frac{1}{3}</td> | + | |
- | </tr> | + | |
- | <tr> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="100%">\displaystyle \frac{1}{2},\ \frac{2}{3},\ \frac{3}{5},\ \frac{5}{8}\ och \ \displaystyle \frac{21}{34}</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | <div class="svar"> | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="100%">\displaystyle \frac{3}{5}<\frac{5}{3}<2<\frac{7}{3}</td> | + | |
- | </tr> | + | |
- | <tr> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="100%">\displaystyle -\frac{1}{2}<-\frac{1}{3}<-\frac{3}{10}<-\frac{1}{5}</td> | + | |
- | </tr> | + | |
- | <tr> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="100%">\displaystyle \frac{1}{2}<\frac{3}{5}<\frac{21}{34}<\frac{5}{8}<\frac{2}{3}</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | ==Övning 1.1:5== | + | |
- | <div class="ovning"> | + | |
- | Ange decimalutvecklingen med tre korrekta decimaler till | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="25%">\displaystyle \frac{7}{6}</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="25%">\displaystyle \frac{9}{4}</td> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="25%">\displaystyle \frac{2}{7}</td> | + | |
- | <td class="ntext">d)</td> | + | |
- | <td class="ntext" width="25%">\sqrt{2}</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | <div class="svar"> | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="25%">1{,}167</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="25%">2{,}250</td> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="25%">0{,}286</td> | + | |
- | <td class="ntext">d)</td> | + | |
- | <td class="ntext" width="25%">1{,}414</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | ==Övning 1.1:6== | + | |
- | <div class="ovning"> | + | |
- | Vilka av följande tal är rationella? Ange dem som en kvot mellan heltal. | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="100%">3,14</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="100%">3{,}1416\,1416\,1416\,\dots</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="100%">0{,}2\,001\,001\,001\,\dots\, (därefter är var tredje decimal en 1:a och övriga 0)</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">d)</td> | + | |
- | <td class="ntext" width="100%">0{,}10\,100\,1000\,10000\,1\dots\, (en 1:a, en 0:a, en 1:a, två 0:or, en 1:a, tre 0:or osv.)</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | <div class="svar"> | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="100%">Talet är rationellt och lika med \,314/100 = 157/50\,.</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="100%">Talet är rationellt och är lika med \,31413/9999 = 10471/3333\,.</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="100%">Talet är rationellt och lika med \,1999/9990\,.</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">d)</td> | + | |
- | <td class="ntext" width="100%">Talet är irrationellt.</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | + | ||
- | ==Övning 1.2:1== | + | |
- | <div class="ovning"> | + | |
- | Skriv på gemensamt bråkstreck | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle \frac{7}{4}+\frac{11}{7}</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle \frac{2}{7}-\frac{1}{5}</td> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle \frac{1}{6}-\frac{2}{5}</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">d)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle \frac{1}{3}+\frac{1}{4}+\frac{1}{5}</td> | + | |
- | <td class="ntext">e)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle \frac{8}{7}+\frac{3}{4}-\frac{4}{3}</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | <div class="svar"> | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle \frac{93}{28}</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle \frac{3}{35}</td> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle -\frac{7}{30}</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">d)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle \frac{47}{60}</td> | + | |
- | <td class="ntext">e)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle \frac{47}{84}</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | ==Övning 1.2:2== | + | |
- | <div class="ovning"> | + | |
- | Bestäm minsta gemensamma nämnare | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="50%">\displaystyle \frac{1}{6}+\frac{1}{10}</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="50%">\displaystyle \frac{1}{4}-\frac{1}{8}</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="50%">\displaystyle \frac{1}{12}-\frac{1}{14}</td> | + | |
- | <td class="ntext">d)</td> | + | |
- | <td class="ntext" width="50%">\displaystyle \frac{2}{45}+\frac{1}{75}</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | <div class="svar"> | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="50%">\displaystyle {30}</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="50%">\displaystyle {8}</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="50%">\displaystyle {84}</td> | + | |
- | <td class="ntext">d)</td> | + | |
- | <td class="ntext" width="50%">\displaystyle {225}</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | ==Övning 1.2:3== | + | |
- | <div class="ovning"> | + | |
- | Beräkna följande uttryck genom att använda minsta gemensamma nämnare: | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="50%">\displaystyle \frac{3}{20}+\frac{7}{50}-\frac{1}{10}</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="50%">\displaystyle \frac{1}{24}+\frac{1}{40}-\frac{1}{16}</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | <div class="svar"> | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="50%">\displaystyle \frac{19}{100}</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="50%">\displaystyle \frac{1}{240}</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | ==Övning 1.2:4== | + | |
- | <div class="ovning"> | + | |
- | Förenkla följande uttryck genom att skriva på gemensamt bråkstreck. Bråket ska vara färdigförkortat. | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle\frac{\displaystyle\frac{3}{5}}{\displaystyle\frac{7}{10}}</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle\frac{\displaystyle\frac{2}{7}}{\displaystyle\frac{3}{8}}</td> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle\frac{\displaystyle\frac{1}{4}-\frac{1}{5}}{\displaystyle\frac{3}{10}}</td> | + | |
- | </tr><tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | <div class="svar"> | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle \frac{6}{7}</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle \frac{16}{21}</td> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle \frac{1}{6}</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | ==Övning 1.2:5== | + | |
- | <div class="ovning"> | + | |
- | Förenkla följande uttryck genom att skriva på gemensamt bråkstreck. Bråket ska vara färdigförkortat. | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle \frac{2}{\displaystyle \frac{1}{7}\displaystyle -\frac{1}{15}}</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle\frac{\displaystyle\frac{1}{2}\displaystyle+\frac{1}{3}}{\displaystyle\frac{1}{3}\displaystyle-\frac{1}{2}}</td> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle\frac{\displaystyle\frac{3}{10}\displaystyle-\frac{1}{5}}{\displaystyle\frac{7}{8}\displaystyle-\frac{3}{16}}</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | <div class="svar"> | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle \frac{105}{4}</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="33%">-5</td> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle \frac{8}{55}</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | ==Övning 1.2:6== | + | |
- | + | ||
- | <div class="ovning"> | + | |
- | Förenkla \ \,\displaystyle \frac{\displaystyle \frac{2}{\displaystyle 3+\frac{1}{2}}\displaystyle + \frac{\displaystyle \frac{1}{2}}{\displaystyle \frac{1}{4}\displaystyle -\frac{1}{3}}}{\displaystyle \frac{1}{2}\displaystyle - \frac{3}{\displaystyle 2-\frac{2}{7}}} | + | |
- | </div> | + | |
- | + | ||
- | <div class="svar"> | + | |
- | <table align="center" width="100%"><tr><td class="ntext" align="center">\displaystyle \frac{152}{35}</td></tr></table> | + | |
- | </div> | + | |
- | + | ||
- | + | ||
- | ==Övning 1.3:1== | + | |
- | + | ||
- | <div class="ovning"> | + | |
- | Beräkna | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="25%">2^3\cdot3^2</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="25%">3^5\cdot9^{-2}</td> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="25%">(-5)^3</td> | + | |
- | <td class="ntext">d)</td> | + | |
- | <td class="ntext" width="25%">\Bigl(\displaystyle \frac{2}{3}\Bigr)^{-3}</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | <div class="svar"> | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="25%">72</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="25%">3</td> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="25%">-125</td> | + | |
- | <td class="ntext">d)</td> | + | |
- | <td class="ntext" width="25%">\displaystyle \frac{27}{8}</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | ==Övning 1.3:2== | + | |
- | + | ||
- | <div class="ovning"> | + | |
- | Skriv som en potens av 2 | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="33%">2\cdot4\cdot8</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="33%">0{,}25</td> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="33%">1</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | <div class="svar"> | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="33%">2^6</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="33%">2^{-2}</td> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="33%">2^0</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | ==Övning 1.3:3== | + | |
- | + | ||
- | <div class="ovning"> | + | |
- | Skriv som en potens av 3 | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="20%">\displaystyle \frac{1}{3}</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="20%">243</td> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="20%">9^2</td> | + | |
- | <td class="ntext">d)</td> | + | |
- | <td class="ntext" width="20%">\displaystyle \frac{1}{27}</td> | + | |
- | <td class="ntext">e)</td> | + | |
- | <td class="ntext" width="20%">\displaystyle \frac{3}{9^2}</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | <div class="svar"> | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="20%">3^{-1}</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="20%">3^5</td> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="20%">3^4</td> | + | |
- | <td class="ntext">d)</td> | + | |
- | <td class="ntext" width="20%">3^{-3}</td> | + | |
- | <td class="ntext">e)</td> | + | |
- | <td class="ntext" width="20%">3^{-3}</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | ==Övning 1.3:4== | + | |
- | + | ||
- | <div class="ovning"> | + | |
- | Beräkna | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="33%">2^{9}\cdot2^{-7}</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="33%">3^{13}\cdot9^{-3}\cdot27^{\,-2}</td> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle \frac{5^{12}}{5^{-4}}\cdot(5^{2})^{-6}</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">d)</td> | + | |
- | <td class="ntext" width="33%">2^{2^{\scriptstyle3}}\cdot(-2)^{\scriptstyle-4}</td> | + | |
- | <td class="ntext">e)</td> | + | |
- | <td class="ntext" width="33%">625\cdot(5^{8}+5^{9})^{-1}</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | <div class="svar"> | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="33%">4</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="33%">3</td> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="33%">625</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">d)</td> | + | |
- | <td class="ntext" width="33%">16</td> | + | |
- | <td class="ntext">e)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle \frac{1}{3750}</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | ==Övning 1.3:5== | + | |
- | + | ||
- | <div class="ovning"> | + | |
- | Beräkna | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="33%">4^{1/2}</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="33%">4^{-1/2}</td> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="33%">9^{3/2}</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">d)</td> | + | |
- | <td class="ntext" width="33%">\left(47^{2/3} \right) ^{3}</td> | + | |
- | <td class="ntext">e)</td> | + | |
- | <td class="ntext" width="33%">3^{1{,}4}\cdot3^{0{,}6}</td> | + | |
- | <td class="ntext">f)</td> | + | |
- | <td class="ntext" width="33%">\bigl( 125 ^{1/3} \bigr)^2\cdot \bigl( 27^{1/3} \bigr)^{-2}\cdot9^{1/2}</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | <div class="svar"> | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="33%">2</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle \frac{1}{2}</td> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="33%">27</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">d)</td> | + | |
- | <td class="ntext" width="33%">2209</td> | + | |
- | <td class="ntext">e)</td> | + | |
- | <td class="ntext" width="33%">9</td> | + | |
- | <td class="ntext">f)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle \frac{25}{3}</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | + | ||
- | ==Övning 1.3:6== | + | |
- | <div class="ovning"> | + | |
- | Avgör vilket tal som är störst av | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="33%">256^{1/3}\ och \ 200^{1/3}</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="33%">0{,}5^{-3}\ och \ 0{,}4^{-3}</td> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="33%">0{,}2^5\ och \ 0{,}2^{7}</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">d)</td> | + | |
- | <td class="ntext" width="33%">400^{1/3}\ och \ \bigl(5^{1/3}\bigr)^{4}</td> | + | |
- | <td class="ntext">e)</td> | + | |
- | <td class="ntext" width="33%">125^{1/2}\ och \ 625^{1/3}</td> | + | |
- | <td class="ntext">f)</td> | + | |
- | <td class="ntext" width="33%">2^{56}\ och \ 3^{40}</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | <div class="svar"> | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="33%">256^{1/3}>200^{1/3}</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="33%">0{,}4^{-3}>0{,}5^{-3}</td> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="33%">0{,}2^{5}>0{,}2^{7}</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">d)</td> | + | |
- | <td class="ntext" width="33%">\bigl(5^{1/3}\bigr)^{4}>400^{1/3}</td> | + | |
- | <td class="ntext">e)</td> | + | |
- | <td class="ntext" width="33%">125^{1/2}>625^{1/3}</td> | + | |
- | <td class="ntext">f)</td> | + | |
- | <td class="ntext" width="33%">3^{40}>2^{56}</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | ==Övning 2.1:1== | + | |
- | <div class="ovning"> | + | |
- | Utveckla | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="33%">3x(x-1)</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="33%">(1+x-x^2)xy</td> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="33%">-x^2(4-y^2)</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">d)</td> | + | |
- | <td class="ntext" width="33%">x^3y^2\left(\displaystyle \frac{1}{y} - \frac{1}{xy}+1\right)</td> | + | |
- | <td class="ntext">e) </td> | + | |
- | <td class="ntext" width="33%">(x-7)^2</td> | + | |
- | <td class="ntext">f)</td> | + | |
- | <td class="ntext" width="33%">(5+4y)^2</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">g)</td> | + | |
- | <td class="ntext" width="33%">(y^2-3x^3)^2</td> | + | |
- | <td class="ntext">h)</td> | + | |
- | <td class="ntext" width="33%">(5x^3+3x^5)^2</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | <div class="svar"> | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="33%">3x^2-3x</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="33%">xy+x^2y-x^3y</td> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="33%">-4x^2+x^2y^2</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">d)</td> | + | |
- | <td class="ntext" width="33%">x^3y-x^2y+x^3y^2</td> | + | |
- | <td class="ntext">e)</td> | + | |
- | <td class="ntext" width="33%">x^2-14x+49</td> | + | |
- | <td class="ntext">f)</td> | + | |
- | <td class="ntext" width="33%">16y^2+40y+25</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">g)</td> | + | |
- | <td class="ntext" width="33%">9x^6-6x^3y^2+y^4</td> | + | |
- | <td class="ntext">h)</td> | + | |
- | <td class="ntext" width="33%">9x^{10}+30x^8+25x^6</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | ==Övning 2.1:2== | + | |
- | <div class="ovning"> | + | |
- | Utveckla och förenkla så långt som möjligt | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="50%">(x-4)(x-5)-3x(2x-3)</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="50%">(1-5x)(1+15x)-3(2-5x)(2+5x)</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="50%">(3x+4)^2-(3x-2)(3x-8)</td> | + | |
- | <td class="ntext">d)</td> | + | |
- | <td class="ntext" width="50%">(3x^2+2)(3x^2-2)(9x^4+4)</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">e)</td> | + | |
- | <td class="ntext" width="50%">(a+b)^2+(a-b)^2</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | <div class="svar"> | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="50%">-5x^2+20</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="50%">10x-11</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="50%">54x</td> | + | |
- | <td class="ntext">d)</td> | + | |
- | <td class="ntext" width="50%">81x^8-16</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">e)</td> | + | |
- | <td class="ntext" width="50%">2a^2+2b^2</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | ==Övning 2.1:3== | + | |
- | + | ||
- | <div class="ovning"> | + | |
- | Faktorisera så långt som möjligt | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="33%">x^2-36</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="33%">5x^2-20</td> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="33%">x^2+6x+9</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">d)</td> | + | |
- | <td class="ntext" width="33%">x^2-10x+25</td> | + | |
- | <td class="ntext">e)</td> | + | |
- | <td class="ntext" width="33%">18x-2x^3</td> | + | |
- | <td class="ntext">f)</td> | + | |
- | <td class="ntext" width="33%">16x^2+8x+1</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | <div class="svar"> | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="33%">(x+6)(x-6)</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="33%">5(x+2)(x-2)</td> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="33%">(x+3)^2</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">d)</td> | + | |
- | <td class="ntext" width="33%">(x-5)^2</td> | + | |
- | <td class="ntext">e)</td> | + | |
- | <td class="ntext" width="33%">-2x(x+3)(x-3)</td> | + | |
- | <td class="ntext">f)</td> | + | |
- | <td class="ntext" width="33%">(4x+1)^2</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | ==Övning 2.1:4== | + | |
- | <div class="ovning"> | + | |
- | Bestäm koefficienterna framför \,x\, och \,x^2\, när följande uttryck utvecklas | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="100%">(x+2)(3x^2-x+5)</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="100%">(1+x+x^2+x^3)(2-x+x^2+x^4)</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="100%">(x-x^3+x^5)(1+3x+5x^2)(2-7x^2-x^4)</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | <div class="svar"> | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="100%">5\, framför \,x^2\,, \,3\, framför \,x</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="100%">2\, framför \,x^2\,, \,1\, framför \,x</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">\textrm{c) }</td> | + | |
- | <td class="ntext" width="100%">6\, framför \,x^2\,, \,2\, framför \,x</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | ==Övning 2.1:5== | + | |
- | <div class="ovning"> | + | |
- | Förenkla så långt som möjligt | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="50%">\displaystyle \frac{1}{x-x^2}-\displaystyle \frac{1}{x}</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="50%">\displaystyle \frac{1}{y^2-2y}-\displaystyle \frac{2}{y^2-4}</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="50%">\displaystyle \frac{(3x^2-12)(x^2-1)}{(x+1)(x+2)}</td> | + | |
- | <td class="ntext">d)</td> | + | |
- | <td class="ntext" width="50%">\displaystyle \frac{(y^2+4y+4)(2y-4)}{(y^2+4)(y^2-4)}</td> | + | |
- | </tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | <div class="svar"> | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="50%">\displaystyle \frac{1}{1-x}</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="50%">-\displaystyle \frac{1}{y(y+2)}</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="50%">3(x-2)(x-1)</td> | + | |
- | <td class="ntext">d)</td> | + | |
- | <td class="ntext" width="50%">\displaystyle \frac{2(y+2)}{y^2+4}</td> | + | |
- | </tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | ==Övning 2.1:6== | + | |
- | <div class="ovning"> | + | |
- | Förenkla så långt som möjligt | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="50%">\left(x-y+\displaystyle\frac{x^2}{y-x}\right) \left(\displaystyle\frac{y}{2x-y}-1\right)</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="50%">\displaystyle \frac{x}{x-2}+\displaystyle \frac{x}{x+3}-2</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="50%">\displaystyle \frac{2a+b}{a^2-ab}-\frac{2}{a-b}</td> | + | |
- | <td class="ntext">d)</td> | + | |
- | <td class="ntext" width="50%">\displaystyle\frac{a-b+\displaystyle\frac{b^2}{a+b}}{1-\left(\displaystyle\frac{a-b}{a+b}\right)^2}</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | <div class=NavFrame style="CLEAR: both"> | + | |
- | <div class=NavHead>Facit </div> | + | |
- | <div class=NavContent> | + | |
- | Facit till alla delfrågor<br \> | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="50%">2y</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="50%">\displaystyle\frac{-x+12}{(x-2)(x+3)}</td> | + | |
- | </tr> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="50%">\displaystyle\frac{b}{a(a-b)}</td> | + | |
- | <td class="ntext">d)</td> | + | |
- | <td class="ntext" width="50%">\displaystyle\frac{a(a+b)}{4b}</td> | + | |
- | </tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | </div> | + | |
- | + | ||
- | <div class=NavFrame style="CLEAR: both"> | + | |
- | <div class=NavHead>Lösning a) </div> | + | |
- | <div class=NavContent> | + | |
- | Lösning till delfråga a) | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr> | + | |
- | <td align="center"> | + | |
- | [[Bild:2_1_6a.gif]] | + | |
- | </td> | + | |
- | </tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | </div> | + | |
- | + | ||
- | <div class=NavFrame style="CLEAR: both"> | + | |
- | <div class=NavHead>Lösning b) </div> | + | |
- | <div class=NavContent> | + | |
- | Lösning till delfråga b) | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr> | + | |
- | <td align="center"> | + | |
- | [[Bild:2_1_6b.gif]] | + | |
- | </td> | + | |
- | </tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | </div> | + | |
- | + | ||
- | <div class=NavFrame style="CLEAR: both"> | + | |
- | <div class=NavHead>Lösning c) </div> | + | |
- | <div class=NavContent> | + | |
- | Lösning till delfråga c) | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr> | + | |
- | <td align="center"> | + | |
- | [[Bild:2_1_6c.gif]] | + | |
- | </td> | + | |
- | </tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | </div> | + | |
- | + | ||
- | <div class=NavFrame style="CLEAR: both"> | + | |
- | <div class=NavHead>Lösning d) </div> | + | |
- | <div class=NavContent> | + | |
- | Lösning till delfråga d) | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr> | + | |
- | <td align="center"> | + | |
- | [[Bild:2_1_6d.gif]] | + | |
- | </td> | + | |
- | </tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | </div> | + | |
- | + | ||
- | ==Övning 2.1:7== | + | |
- | <div class="ovning"> | + | |
- | Förenkla följande bråkuttryck genom att skriva på gemensamt bråkstreck | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle \frac{2}{x+3}-\frac{2}{x+5}</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="33%">x+\displaystyle \frac{1}{x-1}+\displaystyle \frac{1}{x^2}</td> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle \frac{ax}{a+1}-\displaystyle \frac{ax^2}{(a+1)^2}</td> | + | |
- | </tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | <div class=NavFrame style="CLEAR: both"> | + | |
- | <div class=NavHead>Facit </div> | + | |
- | <div class=NavContent> | + | |
- | Facit till alla delfrågorna<br \> | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="33%">$\displaystyle \frac{4}{(x+3)(x+5)}$</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="33%">$\displaystyle \frac{x^4-x^3+x^2+x-1}{x^2(x-1)}$</td> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle \frac{ax(a+1-x)}{(a+1)^2}</td> | + | |
- | </tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | </div> | + | |
- | + | ||
- | <div class=NavFrame style="CLEAR: both"> | + | |
- | <div class=NavHead>Lösning a) </div> | + | |
- | <div class=NavContent> | + | |
- | Lösning till delfråga a) | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr> | + | |
- | <td align="center"> | + | |
- | [[Bild:2_1_7a.gif]] | + | |
- | </td> | + | |
- | </tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | </div> | + | |
- | + | ||
- | <div class=NavFrame style="CLEAR: both"> | + | |
- | <div class=NavHead>Lösning b) </div> | + | |
- | <div class=NavContent> | + | |
- | Lösning till delfråga b) | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr> | + | |
- | <td align="center"> | + | |
- | [[Bild:2_1_7b.gif]] | + | |
- | </td> | + | |
- | </tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | </div> | + | |
- | + | ||
- | <div class=NavFrame style="CLEAR: both"> | + | |
- | <div class=NavHead>Lösning c) </div> | + | |
- | <div class=NavContent> | + | |
- | Lösning till delfråga c) | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr> | + | |
- | <td align="center"> | + | |
- | [[Bild:2_1_7c.gif]] | + | |
- | </td> | + | |
- | </tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | </div> | + | |
- | + | ||
- | ==Övning 2.1:8== | + | |
- | + | ||
- | <div class="ovning"> | + | |
- | Förenkla följande bråkuttryck genom att skriva på gemensamt bråkstreck | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle \frac{\displaystyle\ \frac{x}{x+1}\ }{\ 3+x\ }</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle \frac{\displaystyle \frac{3}{x}-\displaystyle \frac{1}{x}}{\displaystyle \frac{1}{x-3}}</td> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle \frac{1}{1+\displaystyle \frac{1}{1+\displaystyle \frac{1}{1+x}}}</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + | |
- | + | ||
- | <div class="svar"> | + | |
- | <table width="100%" cellspacing="10px"> | + | |
- | <tr align="left"> | + | |
- | <td class="ntext">a)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle \frac{x}{(x+3)(x+1)}</td> | + | |
- | <td class="ntext">b)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle \frac{2(x-3)}{x}</td> | + | |
- | <td class="ntext">c)</td> | + | |
- | <td class="ntext" width="33%">\displaystyle \frac{x+2}{2x+3}</td> | + | |
- | </tr> | + | |
- | <tr><td height="5px"/></tr> | + | |
- | </table> | + | |
- | </div> | + |