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CIE 9231 2025 Nov Paper 24 Q2

A Level / CIE / FP2

CIE 9231 2025 Nov Paper 24 Paper · Question 2

题目

Problem

(a) Find the exact values of xx for which cosh2x=6sinh2x\cosh 2x = 6\sinh^2 x, giving your answers in logarithmic form.

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(b) Sketch the curves C1:y=cosh2xC_1: y = \cosh 2x and C2:y=6sinh2xC_2: y = 6\sinh^2 x on the same diagram.

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题目中文翻译

(a) 求满足 cosh2x=6sinh2x\cosh 2x = 6\sinh^2 xxx 的精确值,并用对数形式给出答案。

(b) 在同一图中画出曲线 C1:y=cosh2xC_1: y = \cosh 2xC2:y=6sinh2xC_2: y = 6\sinh^2 x

解答