3.2 Övningar
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| Versionen från 18 juli 2007 kl. 08.53 (redigera) KTH.SE:u1zpa8nw (Diskussion | bidrag) (Ogör ändring 1181 av Special:Contributions/KTH.SE:u1zpa8nw (Användardiskussion:KTH.SE:u1zpa8nw)) ← Gå till föregående ändring |
Nuvarande version (19 juli 2007 kl. 13.09) (redigera) (ogör) KTH.SE:u1zpa8nw (Diskussion | bidrag) (→Övning 3.2:6) |
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| (6 mellanliggande versioner visas inte.) | |||
| Rad 1: | Rad 1: | ||
| - | '''Övning 3.2:1''' | + | ==Övning 3.2:1== |
| - | <div class="ovning" style="margin-top:-20px; margin-bottom:-18px;">Givet de komplexa talen $\,z=2+i\,$, $\,w=2+3i\,$ och $\,u=-1-2i\,$. Markera följande tal i det komplexa talplanet | + | <div class="ovning"> |
| + | Givet de komplexa talen $\,z=2+i\,$, $\,w=2+3i\,$ och $\,u=-1-2i\,$. Markera följande tal i det komplexa talplanet | ||
| <table width="100%" cellspacing="10px"> | <table width="100%" cellspacing="10px"> | ||
| <tr align="left"> | <tr align="left"> | ||
| Rad 17: | Rad 18: | ||
| </div> | </div> | ||
| - | '''Övning 3.2:2''' | + | <div class=NavFrame style="CLEAR: both"> |
| - | <div class="ovning" style="margin-top:-20px; margin-bottom:-18px;">Rita in följande mängder i det komplexa talplanet | + | <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)<br\>[[Bild:f_3_2_1a.gif]]</td> | ||
| + | <td class="ntext">b)<br\>[[Bild:f_3_2_1b.gif]]</td> | ||
| + | </tr> | ||
| + | <tr align="left"> | ||
| + | <td class="ntext">c)<br\>[[Bild:f_3_2_1c.gif]]</td> | ||
| + | <td class="ntext">d)<br\>[[Bild:f_3_2_1d.gif]]</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 align="left"> | ||
| + | <td width="100%" align="center"> | ||
| + | [[Bild:3_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 align="left"> | ||
| + | <td width="100%" align="center"> | ||
| + | [[Bild:3_2_1b-1(2).gif]]<br\>[[Bild:3_2_1b-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 align="left"> | ||
| + | <td width="100%" align="center"> | ||
| + | [[Bild:3_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 align="left"> | ||
| + | <td width="100%" align="center"> | ||
| + | [[Bild:3_2_1d-1(2).gif]]<br\>[[Bild:3_2_1d-2(2).gif]] | ||
| + | </td> | ||
| + | </tr> | ||
| + | </table> | ||
| + | </div> | ||
| + | </div> | ||
| + | |||
| + | ==Övning 3.2:2== | ||
| + | <div class="ovning"> | ||
| + | Rita in följande mängder i det komplexa talplanet | ||
| <table width="100%" cellspacing="10px"> | <table width="100%" cellspacing="10px"> | ||
| <tr align="left"> | <tr align="left"> | ||
| Rad 41: | Rad 116: | ||
| </div> | </div> | ||
| - | '''Övning 3.2:3''' | + | <div class=NavFrame style="CLEAR: both"> |
| - | <div class="ovning" style="margin-top:-20px; margin-bottom:-18px;">De komplexa talen $\,1+i\,$, $\,3+2i\,$ och $\,3i\,$ bildar i det komplexa talplanet tre hörn i en kvadrat. Bestäm kvadratens fjärde hörn. | + | <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)<br\>[[Bild:f_3_2_2a.gif]]</td> | ||
| + | <td class="ntext">b)<br\>[[Bild:f_3_2_2b.gif]]</td> | ||
| + | </tr> | ||
| + | <tr align="left"> | ||
| + | <td class="ntext">c)<br\>[[Bild:f_3_2_2c.gif]]</td> | ||
| + | <td class="ntext">d)<br\>[[Bild:f_3_2_2d.gif]]</td> | ||
| + | </tr> | ||
| + | <tr align="left"> | ||
| + | <td class="ntext">e)<br\>[[Bild:f_3_2_2e.gif]]</td> | ||
| + | <td class="ntext">f)<br\>[[Bild:f_3_2_2f.gif]]</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 align="left"> | ||
| + | <td width="100%" align="center"> | ||
| + | [[Bild:3_2_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 align="left"> | ||
| + | <td width="100%" align="center"> | ||
| + | [[Bild:3_2_2b-1(2).gif]]<br\>[[Bild:3_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 align="left"> | ||
| + | <td width="100%" align="center"> | ||
| + | [[Bild:3_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 align="left"> | ||
| + | <td width="100%" align="center"> | ||
| + | [[Bild:3_2_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 align="left"> | ||
| + | <td width="100%" align="center"> | ||
| + | [[Bild:3_2_2e.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 align="left"> | ||
| + | <td width="100%" align="center"> | ||
| + | [[Bild:3_2_2f.gif]] | ||
| + | </td> | ||
| + | </tr> | ||
| + | </table> | ||
| + | </div> | ||
| + | </div> | ||
| + | |||
| + | ==Övning 3.2:3== | ||
| + | <div class="ovning"> | ||
| + | De komplexa talen $\,1+i\,$, $\,3+2i\,$ och $\,3i\,$ bildar i det komplexa talplanet tre hörn i en kvadrat. Bestäm kvadratens fjärde hörn. | ||
| + | </div> | ||
| + | |||
| + | <div class=NavFrame style="CLEAR: both"> | ||
| + | <div class=NavHead>Facit </div> | ||
| + | $2+4i$ | ||
| + | </div> | ||
| + | |||
| + | <div class=NavFrame style="CLEAR: both"> | ||
| + | <div class=NavHead>Lösning </div> | ||
| + | <table width="100%" cellspacing="10px"> | ||
| + | <tr align="left"> | ||
| + | <td width="100%" align="center"> | ||
| + | [[Bild:3_2_3-1(2).gif]]<br\>[[Bild:3_2_3-2(2).gif]] | ||
| + | </td> | ||
| + | </tr> | ||
| + | </table> | ||
| </div> | </div> | ||
| - | '''Övning 3.2:4''' | + | ==Övning 3.2:4== |
| - | <div class="ovning" style="margin-top:-20px; margin-bottom:-18px;"> | + | <div class="ovning"> |
| Bestäm beloppet av | Bestäm beloppet av | ||
| <table width="100%" cellspacing="10px"> | <table width="100%" cellspacing="10px"> | ||
| Rad 64: | Rad 261: | ||
| </div> | </div> | ||
| - | '''Övning 3.2:5''' | + | <div class=NavFrame style="CLEAR: both"> |
| - | <div class="ovning" style="margin-top:-20px; margin-bottom:-18px;">Bestäm argumentet av | + | <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%">$5$</td> | ||
| + | <td class="ntext">b)</td> | ||
| + | <td class="ntext" width="50%">$\sqrt{53}$</td> | ||
| + | </tr> | ||
| + | <tr align="left"> | ||
| + | <td class="ntext">c)</td> | ||
| + | <td class="ntext" width="50%">$5\sqrt{13}$</td> | ||
| + | <td class="ntext">d)</td> | ||
| + | <td class="ntext" width="50%">$\displaystyle\frac{5}{\sqrt{13}}$</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 align="left"> | ||
| + | <td width="100%" align="center"> | ||
| + | [[Bild:3_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 align="left"> | ||
| + | <td width="100%" align="center"> | ||
| + | [[Bild:3_2_4b.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 align="left"> | ||
| + | <td width="100%" align="center"> | ||
| + | [[Bild:3_2_4c.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 align="left"> | ||
| + | <td width="100%" align="center"> | ||
| + | [[Bild:3_2_4d.gif]] | ||
| + | </td> | ||
| + | </tr> | ||
| + | </table> | ||
| + | </div> | ||
| + | </div> | ||
| + | |||
| + | ==Övning 3.2:5== | ||
| + | <div class="ovning"> | ||
| + | Bestäm argumentet av | ||
| <table width="100%" cellspacing="10px"> | <table width="100%" cellspacing="10px"> | ||
| <tr align="left"> | <tr align="left"> | ||
| Rad 82: | Rad 357: | ||
| </div> | </div> | ||
| - | '''Övning 3.2:6''' | + | <div class=NavFrame style="CLEAR: both"> |
| - | <div class="ovning" style="margin-top:-20px; margin-bottom:-18px;">Skriv följande tal i polär form | + | <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%">$\pi$</td> | ||
| + | <td class="ntext">b)</td> | ||
| + | <td class="ntext" width="50%">$\displaystyle\frac{3\pi}{4}$</td> | ||
| + | </tr> | ||
| + | <tr align="left"> | ||
| + | <td class="ntext">c)</td> | ||
| + | <td class="ntext" width="50%">$-\displaystyle\frac{\pi}{12}\,$ eller $\,\displaystyle\frac{23}{12}\pi$</td> | ||
| + | <td class="ntext">d)</td> | ||
| + | <td class="ntext" width="50%">$\displaystyle\frac{\pi}{4}$</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 align="left"> | ||
| + | <td width="100%" align="center"> | ||
| + | [[Bild:3_2_5a.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 align="left"> | ||
| + | <td width="100%" align="center"> | ||
| + | [[Bild:3_2_5b.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 align="left"> | ||
| + | <td width="100%" align="center"> | ||
| + | [[Bild:3_2_5c-1(2).gif]]<br\>[[Bild:3_2_5c-2(2).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 align="left"> | ||
| + | <td width="100%" align="center"> | ||
| + | [[Bild:3_2_5d.gif]] | ||
| + | </td> | ||
| + | </tr> | ||
| + | </table> | ||
| + | </div> | ||
| + | </div> | ||
| + | |||
| + | ==Övning 3.2:6== | ||
| + | <div class="ovning"> | ||
| + | Skriv följande tal i polär form | ||
| <table width="100%" cellspacing="10px"> | <table width="100%" cellspacing="10px"> | ||
| <tr align="left"> | <tr align="left"> | ||
| Rad 104: | Rad 457: | ||
| </tr> | </tr> | ||
| </table> | </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%">$\displaystyle3(\cos 0 + i\,\sin 0)$</td> | ||
| + | <td class="ntext">b)</td> | ||
| + | <td class="ntext" width="50%">$\displaystyle11\left(\cos \frac{3\pi}{2} + i\,\sin\frac{3\pi}{2}\right)$</td> | ||
| + | </tr> | ||
| + | <tr align="left"> | ||
| + | <td class="ntext">c)</td> | ||
| + | <td class="ntext" width="50%">$\displaystyle4\sqrt2\left(\cos \frac{5\pi}{4} + i\,\sin\frac{5\pi}{4}\right)$</td> | ||
| + | <td class="ntext">d)</td> | ||
| + | <td class="ntext" width="50%">$\displaystyle2\sqrt{10}\left(\cos \frac{\pi}{3} + i\,\sin\frac{\pi}{3}\right)$</td> | ||
| + | </tr> | ||
| + | <tr align="left"> | ||
| + | <td class="ntext">e)</td> | ||
| + | <td class="ntext" width="50%">$\displaystyle\sqrt2\left(\cos \frac{\pi}{12} + i\,\sin\frac{\pi}{12}\right)$</td> | ||
| + | <td class="ntext">f)</td> | ||
| + | <td class="ntext" width="50%">$\displaystyle\frac{\sqrt2}{3}\left(\cos \frac{\pi}{4} + i\,\sin\frac{\pi}{4}\right)$</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 align="left"> | ||
| + | <td width="100%" align="center"> | ||
| + | [[Bild:3_2_6a-1(2).gif]]<br\>[[Bild:3_2_6a-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 align="left"> | ||
| + | <td width="100%" align="center"> | ||
| + | [[Bild:3_2_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 align="left"> | ||
| + | <td width="100%" align="center"> | ||
| + | [[Bild:3_2_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 align="left"> | ||
| + | <td width="100%" align="center"> | ||
| + | [[Bild:3_2_6d.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 align="left"> | ||
| + | <td width="100%" align="center"> | ||
| + | [[Bild:3_2_6e-1(2).gif]]<br\>[[Bild:3_2_6e-2(2).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 align="left"> | ||
| + | <td width="100%" align="center"> | ||
| + | [[Bild:3_2_6f-1(2).gif]]<br\>[[Bild:3_2_6f-2(2).gif]] | ||
| + | </td> | ||
| + | </tr> | ||
| + | </table> | ||
| + | </div> | ||
| </div> | </div> | ||
Nuvarande version
Innehåll |
[redigera] Övning 3.2:1
Givet de komplexa talen $\,z=2+i\,$, $\,w=2+3i\,$ och $\,u=-1-2i\,$. Markera följande tal i det komplexa talplanet
| a) | $z\,$ och $\,w$ | b) | $z+u\,$ och $\,z-u$ |
| c) | $2z+w$ | d) | $z-\overline{w}+u$ |
[redigera] Övning 3.2:2
Rita in följande mängder i det komplexa talplanet
| a) | $0\le \mbox{Im}\, z \le 3$ | b) | $0 \le \mbox{Re} \, z \le \mbox{Im}\, z \le 1$ |
| c) | $ |z|=2$ | d) | $|z-1-i|=3$ |
| e) | $ \mbox{Re}\, z = i + \bar z$ | f) | $2<|z-i|\le3$ |
[redigera] Övning 3.2:3
De komplexa talen $\,1+i\,$, $\,3+2i\,$ och $\,3i\,$ bildar i det komplexa talplanet tre hörn i en kvadrat. Bestäm kvadratens fjärde hörn.
Facit
$2+4i$
[redigera] Övning 3.2:4
Bestäm beloppet av
| a) | $3+4i$ | b) | $(2-i) + (5+3i)$ |
| c) | $(3-4i)(3+2i)$ | d) | $\displaystyle\frac{3-4i}{3+2i}$ |
Facit
Facit till alla delfrågor
| a) | $5$ | b) | $\sqrt{53}$ |
| c) | $5\sqrt{13}$ | d) | $\displaystyle\frac{5}{\sqrt{13}}$ |
[redigera] Övning 3.2:5
Bestäm argumentet av
| a) | $-10$ | b) | $-2+2i$ |
| c) | $ (\sqrt{3} +i)(1-i)$ | d) | $\displaystyle\frac{i}{1+i}$ |
Facit
Facit till alla delfrågor
| a) | $\pi$ | b) | $\displaystyle\frac{3\pi}{4}$ |
| c) | $-\displaystyle\frac{\pi}{12}\,$ eller $\,\displaystyle\frac{23}{12}\pi$ | d) | $\displaystyle\frac{\pi}{4}$ |
[redigera] Övning 3.2:6
Skriv följande tal i polär form
| a) | $3$ | b) | $-11i$ |
| c) | $ -4-4i$ | d) | $\sqrt{10} + \sqrt{30}\,i$ |
| e) | $ \displaystyle\frac{1+i\sqrt{3}}{1+i}$ | f) | $\displaystyle\frac{(2+2i)(1+i\sqrt{3}\,)}{3i(\sqrt{12} -2i)}$ |
Facit
Facit till alla delfrågor
| a) | $\displaystyle3(\cos 0 + i\,\sin 0)$ | b) | $\displaystyle11\left(\cos \frac{3\pi}{2} + i\,\sin\frac{3\pi}{2}\right)$ |
| c) | $\displaystyle4\sqrt2\left(\cos \frac{5\pi}{4} + i\,\sin\frac{5\pi}{4}\right)$ | d) | $\displaystyle2\sqrt{10}\left(\cos \frac{\pi}{3} + i\,\sin\frac{\pi}{3}\right)$ |
| e) | $\displaystyle\sqrt2\left(\cos \frac{\pi}{12} + i\,\sin\frac{\pi}{12}\right)$ | f) | $\displaystyle\frac{\sqrt2}{3}\left(\cos \frac{\pi}{4} + i\,\sin\frac{\pi}{4}\right)$ |












































