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CIE 9231 2024 June Paper 21 Q1

A Level / CIE / FP2

CIE 9231 2024 June Paper 21 Paper · Question 1

题目

Problem

Find the roots of the equation

z3=1083+108i,z^3=-108\sqrt{3}+108\mathrm{i},

giving your answers in the form r(cosθ+isinθ)r(\cos\theta+\mathrm{i}\sin\theta), where r>0r>0 and 0<θ<2π0<\theta<2\pi.

[5]
题目中文翻译

求方程

z3=1083+108iz^3=-108\sqrt{3}+108\mathrm{i}

的根,并将答案写成 r(cosθ+isinθ)r(\cos\theta+\mathrm{i}\sin\theta) 的形式,其中 r>0r>00<θ<2π0<\theta<2\pi

解答