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Lösung 3.2:6d

Aus Online Mathematik Brückenkurs 2

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Version vom 10:41, 11. Mär. 2009

We can determine the number's magnitude directly using the distance formula,

10+30i=102+302=10+30=40=410=210.

In addition, the number lies in the first quadrant and we can therefore determine the argument using simple trigonometry.

Image:3_2_6_d_bild.gif Image:3_2_6_d_bildtext.gif

The polar form is

210cos3+isin3. 
Von „http://wiki.math.se/wikis/2009/bridgecourse2-TU-Berlin/index.php/L%C3%B6sung_3.2:6d“