Find: ∫0π4cos22θ dθ\displaystyle \int_0^{\frac{\pi}{4}} \cos^2 2\theta \, d\theta∫04πcos22θdθ
59 exam-style questions on CCEA A Level Maths 3.6.1 Integration (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.