Express cos2(u2)\displaystyle \cos^2 \left(\frac{u}{2}\right)cos2(2u) in terms of cosu\cos ucosu
Find: ∫cos2(u2) du\displaystyle \int \cos^2 \left(\frac{u}{2}\right) \, du∫cos2(2u)du
Practise Edexcel A Level Maths 11.3 Using Trigonometric Identities with exam-style questions for A Level Maths. 32 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.