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CIE 9709 2024 March Paper 12 Q11

A Level / CIE / P1

CIE 9709 2024 March Paper 12 Paper · Question 11

题目

Problem

The diagram shows the curve with equation

y=2x233x13+1y = 2x^{-\frac{2}{3}} - 3x^{-\frac{1}{3}} + 1

for x>0x > 0. The curve crosses the xx-axis at points AA and BB and has a minimum point MM.

(a) Find the exact coordinates of MM.

[4]

(b) Find the area of the region bounded by the curve and the line segment ABAB.

[7]
题目中文翻译

图中显示了曲线

y=2x233x13+1y = 2x^{-\frac{2}{3}} - 3x^{-\frac{1}{3}} + 1

其中 x>0x > 0。该曲线与 xx 轴相交于点 AABB,并有一个极小点 MM

(a) 求 MM 的精确坐标。

[4]

(b) 求由曲线和线段 ABAB 围成区域的面积。

[7]

解答