Versionen från 21 juni 2007 kl. 14.36 (redigera) KTH.SE:u1xsetv1 (Diskussion | bidrag) ← Gå till föregående ändring |
Versionen från 21 juni 2007 kl. 14.41 (redigera) (ogör) KTH.SE:u1xsetv1 (Diskussion | bidrag)
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Rad 1 017: |
Rad 1 017: |
| <tr><td height="5px"/></tr> | | <tr><td height="5px"/></tr> |
| </table> | | </table> |
| + | </div> |
| + | |
| + | ==Övning 2.2:1== |
| + | <div class="ovning"> |
| + | Lös ekvationerna |
| + | <table width="100%" cellspacing="10px"> |
| + | <tr align="left"> |
| + | <td class="ntext">a)</td> |
| + | <td class="ntext" width="50%">$x-2=-1$</td> |
| + | <td class="ntext">b)</td> |
| + | <td class="ntext" width="50%">$2x+1=13$</td> |
| + | </tr> |
| + | <tr align="left"> |
| + | <td class="ntext">c)</td> |
| + | <td class="ntext" width="50%">$\displaystyle\frac{1}{3}x-1=x$</td> |
| + | <td class="ntext">d)</td> |
| + | <td class="ntext" width="50%">$5x+7=2x-6$</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 |
| + | <table width="100%" cellspacing="10px"> |
| + | <tr align="left"> |
| + | <td class="ntext">a)</td> |
| + | <td class="ntext" width="50%">$x=1$</td> |
| + | <td class="ntext">b)</td> |
| + | <td class="ntext" width="50%">$x=6$</td> |
| + | </tr> |
| + | <tr align="left"> |
| + | <td class="ntext">c) </td> |
| + | <td class="ntext" width="50%">$x=-\displaystyle\frac{3}{2}$</td> |
| + | <td class="ntext">d)</td> |
| + | <td class="ntext" width="50%">$x=-\displaystyle\frac{13}{3}$</td> |
| + | </tr> |
| + | <tr><td height="5px"/></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_2_1a.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_2_1b.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_2_1c.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_2_1d.gif]] |
| + | </td> |
| + | </tr> |
| + | </table> |
| + | </div> |
| + | </div> |
| + | |
| + | ==Övning 2.2:2== |
| + | <div class="ovning"> |
| + | Lös ekvationerna |
| + | <table width="100%" cellspacing="10px"> |
| + | <tr align="left"> |
| + | <td class="ntext">a)</td> |
| + | <td class="ntext" width="50%">$\displaystyle\frac{5x}{6}-\displaystyle\frac{x+2}{9}=\displaystyle\frac{1}{2}$</td> |
| + | <td class="ntext">b)</td> |
| + | <td class="ntext" width="50%">$\displaystyle\frac{8x+3}{7}-\displaystyle\frac{5x-7}{4}=2$</td> |
| + | </tr> |
| + | <tr align="left"> |
| + | <td class="ntext">c)</td> |
| + | <td class="ntext" width="50%">$(x+3)^2-(x-5)^2=6x+4$</td> |
| + | <td class="ntext">d)</td> |
| + | <td class="ntext" width="50%">$(x^2+4x+1)^2+3x^4-2x^2=(2x^2+2x+3)^2$</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 |
| + | <table width="100%" cellspacing="10px"> |
| + | <tr align="left"> |
| + | <td class="ntext">a)</td> |
| + | <td class="ntext" width="50%">$x=1$</td> |
| + | <td class="ntext">b)</td> |
| + | <td class="ntext" width="50%">$x=\displaystyle\frac{5}{3}$</td> |
| + | </tr> |
| + | <tr align="left"> |
| + | <td class="ntext">c)</td> |
| + | <td class="ntext" width="50%">$x=2$</td> |
| + | <td class="ntext">d)</td> |
| + | <td class="ntext" width="50%">$x=-2$</td> |
| + | </tr> |
| + | <tr><td height="5px"/></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_2_2a-1(2).gif]] |
| + | </td> |
| + | </tr> |
| + | <tr> |
| + | <td align="center"> |
| + | [[Bild:2_2_2a-2(2).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_2_2b-1(2).gif]] |
| + | </td> |
| + | </tr> |
| + | <tr> |
| + | <td align="center"> |
| + | [[Bild:2_2_2b-2(2).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_2_2c.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_2_2d-1(2).gif]] |
| + | </td> |
| + | </tr> |
| + | <tr> |
| + | <td align="center"> |
| + | [[Bild:2_2_2d-2(2).gif]] |
| + | </td> |
| + | </tr> |
| + | </table> |
| + | </div> |
| + | </div> |
| + | |
| + | ==Övning 2.2:3== |
| + | <div class="ovning"> |
| + | Lös ekvationerna |
| + | <table width="100%" cellspacing="10px"> |
| + | <tr align="left"> |
| + | <td class="ntext">a)</td> |
| + | <td class="ntext" width="100%">$\displaystyle\frac{x+3}{x-3}-\displaystyle\frac{x+5}{x-2}=0$</td> |
| + | </tr> |
| + | <tr align="left"> |
| + | <td class="ntext">b)</td> |
| + | <td class="ntext" width="100%">$\displaystyle\frac{4x}{4x-7}-\displaystyle\frac{1}{2x-3}=1$</td> |
| + | </tr> |
| + | <tr align="left"> |
| + | <td class="ntext">c)</td> |
| + | <td class="ntext" width="100%">$\left(\displaystyle\frac{1}{x-1}-\frac{1}{x+1}\right)\left(x^2+\frac{1}{2}\right)=\displaystyle\frac{6x-1}{3x-3}$</td> |
| + | </tr> |
| + | <tr align="left"> |
| + | <td class="ntext">d) </td> |
| + | <td class="ntext" width="100%"> $\left(\displaystyle\frac{2}{x}-3\right)\left(\displaystyle\frac{1}{4x}+\frac{1}{2}\right)-\left(\displaystyle\frac{1}{2x}-\frac{2}{3}\right)^2-\left(\displaystyle\frac{1}{2x}+\frac{1}{3}\right)\left(\displaystyle\frac{1}{2x}-\frac{1}{3}\right)=0$</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 |
| + | <table width="100%" cellspacing="10px"> |
| + | <tr align="left"> |
| + | <td class="ntext">a)</td> |
| + | <td class="ntext" width="100%">$x=9$</td> |
| + | </tr> |
| + | <tr align="left"> |
| + | <td class="ntext">b)</td> |
| + | <td class="ntext" width="100%">$x=\displaystyle\frac{7}{5}$</td> |
| + | </tr> |
| + | <tr align="left"> |
| + | <td class="ntext">c) </td> |
| + | <td class="ntext" width="100%">$x=\displaystyle\frac{4}{5}$</td> |
| + | </tr> |
| + | <tr align="left"> |
| + | <td class="ntext">d) </td> |
| + | <td class="ntext" width="100%">$x=\displaystyle\frac{1}{2}$</td> |
| + | </tr> |
| + | <tr><td height="5px"/></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_2_3a-1(2).gif]] |
| + | </td> |
| + | </tr> |
| + | <tr> |
| + | <td align="center"> |
| + | [[Bild:2_2_3a-2(2).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_2_3b-1(2).gif]] |
| + | </td> |
| + | </tr> |
| + | <tr> |
| + | <td align="center"> |
| + | [[Bild:2_2_3b-2(2).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_2_3c-1(3).gif]] |
| + | </td> |
| + | </tr> |
| + | <tr> |
| + | <td align="center"> |
| + | [[Bild:2_2_3c-2(3).gif]] |
| + | </td> |
| + | </tr> |
| + | <tr> |
| + | <td align="center"> |
| + | [[Bild:2_2_3c-3(3).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_2_3d-1(3).gif]] |
| + | </td> |
| + | </tr> |
| + | <tr> |
| + | <td align="center"> |
| + | [[Bild:2_2_3d-2(3).gif]] |
| + | </td> |
| + | </tr> |
| + | <tr> |
| + | <td align="center"> |
| + | [[Bild:2_2_3d-3(3).gif]] |
| + | </td> |
| + | </tr> |
| + | </table> |
| + | </div> |
| + | </div> |
| + | |
| + | ==Övning 2.2:4== |
| + | |
| + | <div class="ovning"> |
| + | <table width="100%" cellspacing="10px"> |
| + | <tr align="left"> |
| + | <td>a)</td> |
| + | <td width="100%">Skriv ekvationen för linjen $\,y=2x+3\,$ på formen $\,ax+by=c\,$.</td> |
| + | </tr> |
| + | <tr align="left"> |
| + | <td>b)</td> |
| + | <td width="100%">Skriv ekvationen för linjen $\,3x+4y-5=0\,$ på formen $\,y=kx+m\,$.</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 |
| + | <table width="100%" cellspacing="10px"> |
| + | <tr align="left"> |
| + | <td>a)</td> |
| + | <td width="100%">$-2x+y=3$</td> |
| + | </tr> |
| + | <tr align="left"> |
| + | <td>b)</td> |
| + | <td width="100%">$y=-\displaystyle\frac{3}{4}x+\frac{5}{4}$</td> |
| + | </tr> |
| + | <tr><td height="5px"\></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_2_4a.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_2_4b.gif]] |
| + | </td> |
| + | </tr> |
| + | </table> |
| + | </div> |
| + | </div> |
| + | |
| + | ==Övning 2.2:5== |
| + | |
| + | <div class="ovning"> |
| + | <table width="100%" cellspacing="10px"> |
| + | <tr align="left" valign="top"> |
| + | <td class="ntext">a)</td> |
| + | <td class="ntext" width="100%">Bestäm ekvationen för den räta linje som går genom punkterna $\,(2,3)\,$ och $\,(3,0)\,$.</td> |
| + | </tr> |
| + | <tr align="left" valign="top"> |
| + | <td class="ntext">b)</td> |
| + | <td class="ntext" width="100%">Bestäm ekvationen för den räta linje som har riktningskoefficient $\,-3\,$ och går genom punkten $\,(1,-2)\,$.</td> |
| + | </tr> |
| + | <tr align="left" valign="top"> |
| + | <td class="ntext">c)</td> |
| + | <td class="ntext" width="100%">Bestäm ekvationen för den räta linje som går genom punkten $\,(-1,2)\,$ och är parallell med linjen $\,y=3x+1\,$.</td> |
| + | </tr> |
| + | <tr align="left" valign="top"> |
| + | <td class="ntext">d)</td> |
| + | <td class="ntext" width="100%">Bestäm ekvationen för den räta linje som går genom punkten $\,(2,4)\,$ och är vinkelrät mot linjen $\,y=2x+5\,$.</td> |
| + | </tr> |
| + | <tr align="left" valign="top"> |
| + | <td class="ntext">e)</td> |
| + | <td class="ntext" width="100%">Bestäm riktningskoefficienten, $\,k\,$, för den räta linje som skär ''x''-axeln i punkten $\,(5,0)\,$ och ''y''-axeln i punkten $\,(0,-8)\,$.</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="100%">$y=-3x+9$</td> |
| + | </tr> |
| + | <tr align="left"> |
| + | <td class="ntext">b)</td> |
| + | <td class="ntext" width="100%">$y=-3x+1$</td> |
| + | </tr> |
| + | <tr align="left"> |
| + | <td class="ntext">c)</td> |
| + | <td class="ntext" width="100%">$y=3x+5$</td> |
| + | </tr> |
| + | <tr align="left"> |
| + | <td class="ntext">d)</td> |
| + | <td class="ntext" width="100%">$y=-\displaystyle \frac{1}{2}x+5$</td> |
| + | </tr> |
| + | <tr align="left"> |
| + | <td class="ntext">e)</td> |
| + | <td class="ntext" width="100%">$k = \displaystyle\frac{8}{5}$</td> |
| + | </tr> |
| + | <tr><td height="5px"/></tr> |
| + | </table> |
| + | </div> |
| + | </div> |
| + | |
| + | ==Övning 2.2:6== |
| + | |
| + | <div class="ovning"> |
| + | Finn skärningspunkten mellan följande linjer |
| + | <table width="100%" cellspacing="10px"> |
| + | <tr align="left"> |
| + | <td class="ntext">a)</td> |
| + | <td class="ntext" width="50%">$y=3x+5\ $ och ''x''-axeln</td> |
| + | <td class="ntext">b)</td> |
| + | <td class="ntext" width="50%">$y=-x+5\ $ och ''y''-axeln</td> |
| + | </tr> |
| + | <tr align="left"> |
| + | <td class="ntext">c)</td> |
| + | <td class="ntext" width="50%">$4x+5y+6=0\ $ och ''y''-axeln</td> |
| + | <td class="ntext">d)</td> |
| + | <td class="ntext" width="50%">$x+y+1=0\ $ och $\ x=12$</td> |
| + | </tr> |
| + | <tr align="left"> |
| + | <td class="ntext">e)</td> |
| + | <td class="ntext" width="50%">$2x+y-1=0\ $ och $\ y-2x-2=0$</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%">$\bigl(-\frac{5}{3},0\bigr)$</td> |
| + | <td class="ntext">b)</td> |
| + | <td class="ntext" width="50%">$(0,5)$</td> |
| + | </tr> |
| + | <tr align="left"> |
| + | <td class="ntext">c)</td> |
| + | <td class="ntext" width="50%">$\bigl(0,-\frac{6}{5}\bigr)$</td> |
| + | <td class="ntext">d)</td> |
| + | <td class="ntext" width="50%">$(12,-13)$</td> |
| + | </tr> |
| + | <tr align="left"> |
| + | <td class="ntext">e)</td> |
| + | <td class="ntext" width="50%">$\bigl(-\frac{1}{4},\frac{3}{2}\bigr)$</td> |
| + | </tr> |
| + | <tr><td height="5px"/></tr> |
| + | </table> |
| + | </div> |
| + | </div> |
| + | |
| + | ==Övning 2.2:7== |
| + | |
| + | <div class="ovning"> |
| + | Skissera grafen till följande funktioner |
| + | <table width="100%" cellspacing="10px"> |
| + | <tr align="left"> |
| + | <td class="ntext">a)</td> |
| + | <td class="ntext" width="33%">$f(x)=3x-2$</td> |
| + | <td class="ntext">b)</td> |
| + | <td class="ntext" width="33%">$f(x)=2-x$</td> |
| + | <td class="ntext">c)</td> |
| + | <td class="ntext" width="33%">$f(x)=2$</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 |
| + | <table width="100%"> |
| + | <tr align="left"> |
| + | <td class="ntext">a)</td> |
| + | <td class="ntext" width="33%">[[Bild:Svar_o2_2_7a.gif]] </td> |
| + | <td class="ntext">b)</td> |
| + | <td class="ntext" width="33%">[[Bild:Svar_o2_2_7b.gif]] </td> |
| + | </tr><tr> |
| + | <td class="ntext">c)</td> |
| + | <td class="ntext" width="33%">[[Bild:Svar_o2_2_7c.gif]] </td> |
| + | </tr> |
| + | </table> |
| + | </div> |
| + | </div> |
| + | |
| + | |
| + | ==Övning 2.2:8== |
| + | |
| + | <div class="ovning"> |
| + | Rita in i ett ''xy''-plan alla punkter vars koordinater $\,(x,y)\,$ uppfyller |
| + | <table width="100%" cellspacing="10px"> |
| + | <tr align="left"> |
| + | <td class="ntext">a)</td> |
| + | <td class="ntext" width="33%">$y \geq x $</td> |
| + | <td class="ntext">b)</td> |
| + | <td class="ntext" width="33%">$y < 3x -4 $</td> |
| + | <td class="ntext">c)</td> |
| + | <td class="ntext" width="33%">$2x+3y \leq 6 $</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 |
| + | <table width="100%"> |
| + | <tr align="left"> |
| + | <td class="ntext">a)</td> |
| + | <td class="ntext" width="33%">[[Bild:Svar_o2_2_8a.gif]]</td> |
| + | <td class="ntext">b)</td> |
| + | <td class="ntext" width="33%">[[Bild:Svar_o2_2_8b.gif]]</td> |
| + | </tr><tr> |
| + | <td class="ntext">c)</td> |
| + | <td class="ntext" width="33%">[[Bild:Svar_o2_2_8c.gif]]</td> |
| + | </tr> |
| + | </table> |
| + | </div> |
| + | </div> |
| + | |
| + | |
| + | |
| + | ==Övning 2.2:9== |
| + | |
| + | <div class="ovning"> |
| + | Beräkna arean av den triangel som |
| + | <table width="100%" cellspacing="10px"> |
| + | <tr align="left"> |
| + | <td class="ntext">a)</td> |
| + | <td class="ntext" width="100%">har hörn i punkterna $\,(1,4)\,$, $\,(3,3)\,$ och $\,(1,0)\,$</td> |
| + | </tr> |
| + | <tr align="left"> |
| + | <td class="ntext">b)</td> |
| + | <td class="ntext" width="100%">begränsas av linjerna $\ x=2y\,$, $\ y=4\ $ och $\ y=10-2x\,$</td> |
| + | </tr> |
| + | <tr align="left"> |
| + | <td class="ntext">c)</td> |
| + | <td class="ntext" width="100%">beskrivs av olikheterna $\ x+y \geq -2\,$, $\ 2x-y \leq 2\ $ och $\ 2y-x \leq 2\,$</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 |
| + | <table width="100%" cellspacing="10px"> |
| + | <tr align="left"> |
| + | <td class="ntext">a)</td> |
| + | <td class="ntext" width="100%">$4\,$ a.e.</td> |
| + | </tr> |
| + | <tr align="left"> |
| + | <td class="ntext">b)</td> |
| + | <td class="ntext" width="100%">$5\,$ a.e.</td> |
| + | </tr> |
| + | <tr align="left"> |
| + | <td class="ntext">c)</td> |
| + | <td class="ntext" width="100%">$6\,$ a.e.</td> |
| + | </tr> |
| + | <tr><td height="5px"/></tr> |
| + | </table> |
| + | </div> |
| </div> | | </div> |