Use the substitution u=x4+2u = x^4 + 2u=x4+2 to find ∫4x3x4+2dx\displaystyle \int \frac{4x^3}{x^4 + 2} dx∫x4+24x3dx
119 exam-style questions on AQA A Level Maths 1.11.5 Integration by substitution and by parts (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.