11.4 Reverse Chain Rule
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Given that k k\,k is a positive constant,

a.

find

∫8x2x2+k dx \int \frac{8x}{2x^2 + k} \, dx ∫2x2+k8x​dx
[2]
b.

Given also that

∫148x2x2+k dx=ln⁡81 \int_{1}^{4} \frac{8x}{2x^2 + k} \, dx = \ln 81 ∫14​2x2+k8x​dx=ln81

find the value of kkk.

[5]

11.4 Reverse Chain Rule Questions

Practise Edexcel A Level Maths 11.4 Reverse Chain Rule with exam-style questions for A Level Maths. 8 questions, matched to the Edexcel A Level Maths (9MA0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

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11.4 Reverse Chain Rule Questions

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