1) I got: and I have to find the polar representation of z. Them find and (when it's polar)... My bid: to find the polar representation... right? So it would be something like: ? 2a) find all values for w, when 2b) Find all z's when
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Originally Posted by MissWonder 1) I got: and I have to find the polar representation of z. Them find and (when it's polar)... My bid: to find the polar representation... right? So it would be something like: ? 2a) find all values for w, when 2b) Find all z's when . . Since is in the first quadrant . Thus . To find , use DeMoivre's Theorem. .
I did not know how to do that :S Strange! our teatcher did it in another way.. But your explaination made sense
I maybe understand 2a and 2b now.. ??
Originally Posted by MissWonder I maybe understand 2a and 2b now.. ?? No, it would actually be . You could solve this using the quadratic formula, but the solution would involve . Better to convert to polars and use DeMoivre's Theorem. . Supposing we knew what was, if we squared it we would have . Try to solve .
Try to solve . r=pi+cis ??
Originally Posted by MissWonder Try to solve . r=pi+cis ?? Wouldn't it make sense that and ? Solve for and .
By the way, is shorthand for .
r= 1.41421 and the other... hmm pi?
Hmm.. maybe rather cis=2/pi
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