Unformatted text preview: unity. (g) Since the exponent is greater than one, there is only one solution. To Fnd it, Frst note that (1+ i ) 2 = 2 i . Thus (1+ i ) 8 = (2 i ) 4 = 16. 5. (a) Let S = n ± j =0 z j . Then we have zSS = n +1 ± j =1 z jn ± j =0 z j = z n +11 . Dividing both sides by 1z gives S = 1z n +1 1z (b) Noticing that cos j θ = ² ² e j θ ³ , 4...
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 Spring '09
 Koskesh
 Math, Polar coordinate system, Empty product, simple calculation

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