2.1 Övningar
Sommarmatte 1
(Skillnad mellan versioner)
Versionen från 27 april 2007 kl. 15.09 (redigera) Ossiang (Diskussion | bidrag) (→Övning 2.2:2) ← Gå till föregående ändring |
Nuvarande version (31 mars 2008 kl. 07.52) (redigera) (ogör) KTH.SE:u1rp004j (Diskussion | bidrag) (→Övning 2.1:3) |
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(65 mellanliggande versioner visas inte.) | |||
Rad 1: | Rad 1: | ||
==Övning 2.1:1== | ==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=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="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> | ||
+ | </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_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_1_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_1_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_1_1d.gif]] | ||
+ | </td> | ||
+ | </tr> | ||
+ | </table> | ||
+ | </div> | ||
+ | </div> | ||
+ | |||
+ | <div class=NavFrame style="CLEAR: both"> | ||
+ | <div class=NavHead>Lösning e) </div> | ||
+ | <div class=NavContent> | ||
+ | Lösning till delfråga e) | ||
+ | <table width="100%" cellspacing="10px"> | ||
+ | <tr> | ||
+ | <td align="center"> | ||
+ | [[Bild:2_1_1e.gif]] | ||
+ | </td> | ||
+ | </tr> | ||
+ | </table> | ||
+ | </div> | ||
+ | </div> | ||
+ | |||
+ | <div class=NavFrame style="CLEAR: both"> | ||
+ | <div class=NavHead>Lösning f) </DIV> | ||
+ | <div class=NavContent> | ||
+ | Lösning till delfråga f) | ||
+ | <table width="100%" cellspacing="10px"> | ||
+ | <tr> | ||
+ | <td align="center"> | ||
+ | [[Bild:2_1_1f.gif]] | ||
+ | </td> | ||
+ | </tr> | ||
+ | </table> | ||
+ | </div> | ||
+ | </div> | ||
+ | |||
+ | <div class=NavFrame style="CLEAR: both"> | ||
+ | <div class=NavHead>Lösning g) </div> | ||
+ | <div class=NavContent> | ||
+ | Lösning till delfråga g) | ||
+ | <table width="100%" cellspacing="10px"> | ||
+ | <tr> | ||
+ | <td align="center"> | ||
+ | [[Bild:2_1_1g.gif]] | ||
+ | </td> | ||
+ | </tr> | ||
+ | </table> | ||
+ | </div> | ||
+ | </div> | ||
+ | |||
+ | <div class=NavFrame style="CLEAR: both"> | ||
+ | <div class=NavHead>Lösning h) </DIV> | ||
+ | <div class=NavContent> | ||
+ | Lösning till delfråga h) | ||
+ | <table width="100%" cellspacing="10px"> | ||
+ | <tr> | ||
+ | <td align="center"> | ||
+ | [[Bild:2_1_1h.gif]] | ||
+ | </td> | ||
+ | </tr> | ||
+ | </table> | ||
+ | </div> | ||
+ | </div> | ||
+ | |||
+ | ==Övning 2.1:2== | ||
<div class="ovning"> | <div class="ovning"> | ||
Utveckla och förenkla så långt som möjligt | Utveckla och förenkla så långt som möjligt | ||
<table width="100%" cellspacing="10px"> | <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> | <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"> | <tr align="left"> | ||
<td class="ntext">a)</td> | <td class="ntext">a)</td> | ||
- | <td class="ntext"> $(x-4)(x-5)-3x(2x-3)$</td> | + | <td class="ntext" width="50%">$-5x^2+20$</td> |
<td class="ntext">b)</td> | <td class="ntext">b)</td> | ||
- | <td class="ntext">$(1-5x)(1+15x)-3(2-5x)(2+5x)$</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> | ||
<tr><td height="5px"/></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_1_2a.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_2b.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_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_1_2d.gif]] | ||
+ | </td> | ||
+ | </tr> | ||
+ | </table> | ||
+ | </div> | ||
+ | </div> | ||
+ | |||
+ | <div class=NavFrame style="CLEAR: both"> | ||
+ | <div class=NavHead>Lösning e) </div> | ||
+ | <div class=NavContent> | ||
+ | Lösning till delfråga e) | ||
+ | <table width="100%" cellspacing="10px"> | ||
+ | <tr> | ||
+ | <td align="center"> | ||
+ | [[Bild:2_1_2e.gif]] | ||
+ | </td> | ||
+ | </tr> | ||
+ | </table> | ||
+ | </div> | ||
+ | </div> | ||
+ | |||
+ | ==Övning 2.1:3== | ||
+ | |||
+ | <div class="ovning"> | ||
+ | Faktorisera så långt som möjligt | ||
+ | <table width="100%" cellspacing="10px"> | ||
<tr align="left"> | <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">c)</td> | ||
- | <td class="ntext">$(3x+4)^2-(3x-2)(3x-8)$</td> | + | <td class="ntext" width="33%">$x^2+6x+9$</td> |
+ | </tr> | ||
+ | <tr align="left"> | ||
<td class="ntext">d)</td> | <td class="ntext">d)</td> | ||
- | <td class="ntext">$(3x^2+2)(3x^2-2)(9x^4+4)$</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> | ||
<tr><td height="5px"/></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"> | <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">e)</td> | ||
- | <td class="ntext">$(a+b)^2+(a-b)^2$</td> | + | <td class="ntext" width="33%">$-2x(x+3)(x-3)$</td> |
<td class="ntext">f)</td> | <td class="ntext">f)</td> | ||
- | <td class="ntext">$(5+4y)^2$</td> | + | <td class="ntext" width="33%">$(4x+1)^2$</td> |
</tr> | </tr> | ||
<tr><td height="5px"/></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_1_3a.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_3b.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_3c.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_3d.gif]] | ||
+ | </td> | ||
+ | </tr> | ||
+ | </table> | ||
+ | </div> | ||
+ | </div> | ||
+ | |||
+ | <div class=NavFrame style="CLEAR: both"> | ||
+ | <div class=NavHead>Lösning e) </div> | ||
+ | <div class=NavContent> | ||
+ | Lösning till delfråga e) | ||
+ | <table width="100%" cellspacing="10px"> | ||
+ | <tr> | ||
+ | <td align="center"> | ||
+ | [[Bild:2_1_3e.gif]] | ||
+ | </td> | ||
+ | </tr> | ||
+ | </table> | ||
+ | </div> | ||
+ | </div> | ||
+ | |||
+ | <div class=NavFrame style="CLEAR: both"> | ||
+ | <div class=NavHead>Lösning f) </div> | ||
+ | <div class=NavContent> | ||
+ | Lösning till delfråga f) | ||
+ | <table width="100%" cellspacing="10px"> | ||
+ | <tr> | ||
+ | <td align="center"> | ||
+ | [[Bild:2_1_3f.gif]] | ||
+ | </td> | ||
+ | </tr> | ||
+ | </table> | ||
+ | </div> | ||
+ | </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"> | <tr align="left"> | ||
- | <td class="ntext">g)</td> | + | <td class="ntext">a)</td> |
- | <td class="ntext">$(y^2-3x^3)^2$</td> | + | <td class="ntext" width="100%">$(x+2)(3x^2-x+5)$</td> |
- | <td class="ntext">h)</td> | + | </tr> |
- | <td class="ntext">$(5x^3+3x^5)^2$</td> | + | <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> | ||
<tr><td height="5px"/></tr> | <tr><td height="5px"/></tr> | ||
Rad 38: | Rad 452: | ||
<div class=NavHead>Facit </div> | <div class=NavHead>Facit </div> | ||
<div class=NavContent> | <div class=NavContent> | ||
- | Facit till alla delfrågorna | + | Facit till alla delfrågor |
+ | <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> | </div> | ||
</div> | </div> | ||
<div class=NavFrame style="CLEAR: both"> | <div class=NavFrame style="CLEAR: both"> | ||
- | <div class=NavHead>Lösning a </div> | + | <div class=NavHead>Lösning a) </div> |
<div class=NavContent> | <div class=NavContent> | ||
- | Lösning till delfråga a<br />[[Bild:2_1_1a.gif]] | + | Lösning till delfråga a) |
+ | <table width="100%" cellspacing="10px"> | ||
+ | <tr> | ||
+ | <td align="center"> | ||
+ | [[Bild:2_1_4a.gif]] | ||
+ | </td> | ||
+ | </tr> | ||
+ | </table> | ||
</div> | </div> | ||
</div> | </div> | ||
<div class=NavFrame style="CLEAR: both"> | <div class=NavFrame style="CLEAR: both"> | ||
- | <div class=NavHead>Lösning b </DIV> | + | <div class=NavHead>Lösning b) </div> |
<div class=NavContent> | <div class=NavContent> | ||
- | Lösning till delfråga b<br />[[Bild:2_1_1b.gif]] | + | Lösning till delfråga b) |
+ | <table width="100%" cellspacing="10px"> | ||
+ | <tr> | ||
+ | <td align="center"> | ||
+ | [[Bild:2_1_4b-1(2).gif]] | ||
+ | </td> | ||
+ | </tr> | ||
+ | <tr> | ||
+ | <td align="center"> | ||
+ | [[Bild:2_1_4b-2(2).gif]] | ||
+ | </td> | ||
+ | </tr> | ||
+ | </table> | ||
</div> | </div> | ||
</div> | </div> | ||
<div class=NavFrame style="CLEAR: both"> | <div class=NavFrame style="CLEAR: both"> | ||
- | <div class=NavHead>Lösning c </div> | + | <div class=NavHead>Lösning c) </div> |
<div class=NavContent> | <div class=NavContent> | ||
- | Lösning till delfråga c<br />[[Bild:2_1_1c.gif]] | + | Lösning till delfråga c) |
+ | <table width="100%" cellspacing="10px"> | ||
+ | <tr> | ||
+ | <td align="center"> | ||
+ | [[Bild:2_1_4c.gif]] | ||
+ | </td> | ||
+ | </tr> | ||
+ | </table> | ||
</div> | </div> | ||
+ | </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> | ||
<div class=NavFrame style="CLEAR: both"> | <div class=NavFrame style="CLEAR: both"> | ||
- | <div class=NavHead>Lösning d </DIV> | + | <div class=NavHead>Facit </div> |
<div class=NavContent> | <div class=NavContent> | ||
- | Lösning till delfråga d<br />[[Bild:2_1_1d.gif]] | + | Facit till alla delfrågor |
+ | <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> | </div> | ||
</div> | </div> | ||
<div class=NavFrame style="CLEAR: both"> | <div class=NavFrame style="CLEAR: both"> | ||
- | <div class=NavHead>Lösning e </div> | + | <div class=NavHead>Lösning a) </div> |
<div class=NavContent> | <div class=NavContent> | ||
- | Lösning till delfråga e<br />[[Bild:2_1_1e.gif]] | + | Lösning till delfråga a) |
+ | <table width="100%" cellspacing="10px"> | ||
+ | <tr> | ||
+ | <td align="center"> | ||
+ | [[Bild:2_1_5a.gif]] | ||
+ | </td> | ||
+ | </tr> | ||
+ | </table> | ||
</div> | </div> | ||
</div> | </div> | ||
<div class=NavFrame style="CLEAR: both"> | <div class=NavFrame style="CLEAR: both"> | ||
- | <div class=NavHead>Lösning f </DIV> | + | <div class=NavHead>Lösning b) </div> |
<div class=NavContent> | <div class=NavContent> | ||
- | Lösning till delfråga f<br />[[Bild:2_1_1f.gif]] | + | Lösning till delfråga b) |
+ | <table width="100%" cellspacing="10px"> | ||
+ | <tr> | ||
+ | <td align="center"> | ||
+ | [[Bild:2_1_5b.gif]] | ||
+ | </td> | ||
+ | </tr> | ||
+ | </table> | ||
</div> | </div> | ||
</div> | </div> | ||
<div class=NavFrame style="CLEAR: both"> | <div class=NavFrame style="CLEAR: both"> | ||
- | <div class=NavHead>Lösning g </div> | + | <div class=NavHead>Lösning c) </div> |
<div class=NavContent> | <div class=NavContent> | ||
- | Lösning till delfråga g<br />[[Bild:2_1_1g.gif]] | + | Lösning till delfråga c) |
+ | <table width="100%" cellspacing="10px"> | ||
+ | <tr> | ||
+ | <td align="center"> | ||
+ | [[Bild:2_1_5c.gif]] | ||
+ | </td> | ||
+ | </tr> | ||
+ | </table> | ||
</div> | </div> | ||
</div> | </div> | ||
<div class=NavFrame style="CLEAR: both"> | <div class=NavFrame style="CLEAR: both"> | ||
- | <div class=NavHead>Lösning h </DIV> | + | <div class=NavHead>Lösning d) </div> |
<div class=NavContent> | <div class=NavContent> | ||
- | Lösning till delfråga h<br />[[Bild:2_1_1h.gif]] | + | Lösning till delfråga d) |
+ | <table width="100%" cellspacing="10px"> | ||
+ | <tr> | ||
+ | <td align="center"> | ||
+ | [[Bild:2_1_5d-1(2).gif]] | ||
+ | </td> | ||
+ | </tr> | ||
+ | <tr> | ||
+ | <td align="center"> | ||
+ | [[Bild:2_1_5d-2(2).gif]] | ||
+ | </td> | ||
+ | </tr> | ||
+ | </table> | ||
</div> | </div> | ||
</div> | </div> | ||
- | ==Övning 2.2:2== | + | ==Övning 2.1:6== |
- | Utveckla och förenkla så långt som möjligt | + | <div class="ovning"> |
+ | Förenkla så långt som möjligt | ||
<table width="100%" cellspacing="10px"> | <table width="100%" cellspacing="10px"> | ||
- | <tr><td height="5px"/></tr> | ||
<tr align="left"> | <tr align="left"> | ||
- | <td class="ntext">$\textrm{a) }$</td> | + | <td class="ntext">a)</td> |
- | <td class="ntext"> $(x-4)(x-5)-3x(2x-3)$</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">$\textrm{b) }$</td> | + | <td class="ntext">b)</td> |
- | <td class="ntext">$(1-5x)(1+15x)-3(2-5x)(2+5x)$</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> | ||
<tr><td height="5px"/></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"> | <tr align="left"> | ||
- | <td class="ntext">$\textrm{c) }$</td> | + | <td class="ntext">a)</td> |
- | <td class="ntext">$(3x+4)^2-(3x-2)(3x-8)$</td> | + | <td class="ntext" width="50%">$2y$</td> |
- | <td class="ntext">$\textrm{d) }$</td> | + | <td class="ntext">b)</td> |
- | <td class="ntext">$(3x^2+2)(3x^2-2)(9x^4+4)$</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> | ||
<tr><td height="5px"/></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"> | <tr align="left"> | ||
- | <td class="ntext">$\textrm{e) }$</td> | + | <td class="ntext">a)</td> |
- | <td class="ntext">$(a+b)^2+(a-b)^2$</td> | + | <td class="ntext" width="33%">$\displaystyle \frac{x}{(x+3)(x+1)}$</td> |
- | <td class="ntext"></td> | + | <td class="ntext">b)</td> |
- | <td class="ntext"></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> | ||
<tr><td height="5px"/></tr> | <tr><td height="5px"/></tr> | ||
</table> | </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_8a.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_8b.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_8c-1(2).gif]] | ||
+ | </td> | ||
+ | </tr> | ||
+ | <tr> | ||
+ | <td align="center"> | ||
+ | [[Bild:2_1_8c-2(2).gif]] | ||
+ | </td> | ||
+ | </tr> | ||
+ | </table> | ||
+ | </div> | ||
+ | </div> |
Nuvarande version
Innehåll |
[redigera] Övning 2.1:1
Utveckla
a) | $3x(x-1)$ | b) | $(1+x-x^2)xy$ | c) | $-x^2(4-y^2)$ |
d) | $x^3y^2\left(\displaystyle \frac{1}{y} - \frac{1}{xy}+1\right)$ | e) | $(x-7)^2$ | f) | $(5+4y)^2$ |
g) | $(y^2-3x^3)^2$ | h) | $(5x^3+3x^5)^2$ | ||
Facit
Facit till alla delfrågor
a) | $3x^2-3x$ | b) | $xy+x^2y-x^3y$ | c) | $-4x^2+x^2y^2$ |
d) | $x^3y-x^2y+x^3y^2$ | e) | $x^2-14x+49$ | f) | $16y^2+40y+25$ |
g) | $9x^6-6x^3y^2+y^4$ | h) | $9x^{10}+30x^8+25x^6$ | ||
[redigera] Övning 2.1:2
Utveckla och förenkla så långt som möjligt
a) | $(x-4)(x-5)-3x(2x-3)$ | b) | $(1-5x)(1+15x)-3(2-5x)(2+5x)$ |
c) | $(3x+4)^2-(3x-2)(3x-8)$ | d) | $(3x^2+2)(3x^2-2)(9x^4+4)$ |
e) | $(a+b)^2+(a-b)^2$ | ||
Facit
Facit till alla delfrågor
a) | $-5x^2+20$ | b) | $10x-11$ |
c) | $54x$ | d) | $81x^8-16$ |
e) | $2a^2+2b^2$ | ||
[redigera] Övning 2.1:3
Faktorisera så långt som möjligt
a) | $x^2-36$ | b) | $5x^2-20$ | c) | $x^2+6x+9$ |
d) | $x^2-10x+25$ | e) | $18x-2x^3$ | f) | $16x^2+8x+1$ |
Facit
Facit till alla delfrågor
a) | $(x+6)(x-6)$ | b) | $5(x+2)(x-2)$ | c) | $(x+3)^2$ |
d) | $(x-5)^2$ | e) | $-2x(x+3)(x-3)$ | f) | $(4x+1)^2$ |
[redigera] Övning 2.1:4
Bestäm koefficienterna framför $\,x\,$ och $\,x^2\,$ när följande uttryck utvecklas
a) | $(x+2)(3x^2-x+5)$ |
b) | $(1+x+x^2+x^3)(2-x+x^2+x^4)$ |
c) | $(x-x^3+x^5)(1+3x+5x^2)(2-7x^2-x^4)$ |
Facit
Facit till alla delfrågor
a) | $5\,$ framför $\,x^2\,$, $\,3\,$ framför $\,x$ |
b) | $2\,$ framför $\,x^2\,$, $\,1\,$ framför $\,x$ |
$\textrm{c) }$ | $6\,$ framför $\,x^2\,$, $\,2\,$ framför $\,x$ |
[redigera] Övning 2.1:5
Förenkla så långt som möjligt
a) | $\displaystyle \frac{1}{x-x^2}-\displaystyle \frac{1}{x}$ | b) | $\displaystyle \frac{1}{y^2-2y}-\displaystyle \frac{2}{y^2-4}$ |
c) | $\displaystyle \frac{(3x^2-12)(x^2-1)}{(x+1)(x+2)}$ | d) | $\displaystyle \frac{(y^2+4y+4)(2y-4)}{(y^2+4)(y^2-4)}$ |
Facit
Facit till alla delfrågor
a) | $\displaystyle \frac{1}{1-x}$ | b) | $-\displaystyle \frac{1}{y(y+2)}$ |
c) | $3(x-2)(x-1)$ | d) | $\displaystyle \frac{2(y+2)}{y^2+4}$ |
[redigera] Övning 2.1:6
Förenkla så långt som möjligt
a) | $\left(x-y+\displaystyle\frac{x^2}{y-x}\right)$ $\left(\displaystyle\frac{y}{2x-y}-1\right)$ | b) | $\displaystyle \frac{x}{x-2}+\displaystyle \frac{x}{x+3}-2$ |
c) | $\displaystyle \frac{2a+b}{a^2-ab}-\frac{2}{a-b}$ | d) | $\displaystyle\frac{a-b+\displaystyle\frac{b^2}{a+b}}{1-\left(\displaystyle\frac{a-b}{a+b}\right)^2}$ |
Facit
Facit till alla delfrågor
a) | $2y$ | b) | $\displaystyle\frac{-x+12}{(x-2)(x+3)}$ |
c) | $\displaystyle\frac{b}{a(a-b)}$ | d) | $\displaystyle\frac{a(a+b)}{4b}$ |
[redigera] Övning 2.1:7
Förenkla följande bråkuttryck genom att skriva på gemensamt bråkstreck
a) | $\displaystyle \frac{2}{x+3}-\frac{2}{x+5}$ | b) | $x+\displaystyle \frac{1}{x-1}+\displaystyle \frac{1}{x^2}$ | c) | $\displaystyle \frac{ax}{a+1}-\displaystyle \frac{ax^2}{(a+1)^2}$ |
Facit
Facit till alla delfrågorna
a) | $\displaystyle \frac{4}{(x+3)(x+5)}$ | b) | $\displaystyle \frac{x^4-x^3+x^2+x-1}{x^2(x-1)}$ | c) | $\displaystyle \frac{ax(a+1-x)}{(a+1)^2}$ |
[redigera] Övning 2.1:8
Förenkla följande bråkuttryck genom att skriva på gemensamt bråkstreck
a) | $\displaystyle \frac{\displaystyle\ \frac{x}{x+1}\ }{\ 3+x\ }$ | b) | $\displaystyle \frac{\displaystyle \frac{3}{x}-\displaystyle \frac{1}{x}}{\displaystyle \frac{1}{x-3}}$ | c) | $\displaystyle \frac{1}{1+\displaystyle \frac{1}{1+\displaystyle \frac{1}{1+x}}}$ |
Facit
Facit till alla delfrågor
a) | $\displaystyle \frac{x}{(x+3)(x+1)}$ | b) | $\displaystyle \frac{2(x-3)}{x}$ | c) | $\displaystyle \frac{x+2}{2x+3}$ |