Using the relation z=x+iy = rcosθ + irsinθ=re^iθ . Derive z^n = r^n(cosθ + isinθ)^n = r^n(cosnθ + isinnθ).

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter3: Functions And Graphs
Section3.4: Definition Of Function
Problem 51E
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Using the relation z=x+iy = rcosθ + irsinθ=re^iθ . Derive z^n = r^n(cosθ + isinθ)^n = r^n(cosnθ + isinnθ). Please show full and complete procedure. PLEASE NOTE THAT YOU DO NOT NEED TO EVALUATE WITH ANY VALUE OF N, INSTEAD, YOU ONLY NEED TO SHOW HOW TO ARRIVE TO THE LAST EXPRESSION 

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