let-z-r-e-i-find-the-value-of-P-n-z-z-z-2-z-2-z-n-z-n-

Question Number 49241 by maxmathsup by imad last updated on 04/Dec/18

l e t z = r e^{i θ} f i n d t h e v a l u e o f

P_{n} = (z + \bar{z}) (z^{2} + \overset{-^{2}}{z}) \dots . . (z^{n} + \overset{-^{n}}{z}) .