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CIE 9231 2024 November Paper 22 Q3

A Level / CIE / FP2

CIE 9231 2024 Nov Paper 22 Paper · Question 3

题目

Problem

The curve CC has parametric equations

x=12e2t13t312,y=2et(t1),x = \frac{1}{2}e^{2t} - \frac{1}{3}t^3 - \frac{1}{2}, \qquad y = 2e^t(t - 1),

for 0t10 \le t \le 1.

Find the exact length of CC.

[7]
题目中文翻译

曲线 CC 的参数方程为

x=12e2t13t312,y=2et(t1),x = \frac{1}{2}e^{2t} - \frac{1}{3}t^3 - \frac{1}{2}, \qquad y = 2e^t(t - 1),

其中 0t10 \le t \le 1

求曲线 CC 的精确长度。

解答