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If (x+i y)^5=p+i q , then prove that (y+...

If `(x+i y)^5=p+i q ,` then prove that `(y+i x)^5=q+i pdot`

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CENGAGE PUBLICATION-COMPLEX NUMBERS AND QUADRATIC EQUATIONS-All Questions
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  19. Show that e^(2m itheta)((icottheta+1)/(i cottheta-1))^m=1.

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