Use the substitution u=x4+1u = x^4 + 1u=x4+1 to find ∫122x3(x4+1)2dx\int_1^2 2x^3(x^4 + 1)^2 dx∫122x3(x4+1)2dx.
Practise Edexcel A Level Maths 11.5 Integration by Substitution with exam-style questions for A Level Maths. 59 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.