Chain Rule Differentiation | 40 Worked Examples | Edexcel A-Level Maths

40 progressive Edexcel A-Level (9MA0) chain rule differentiation questions with full mark-scheme style worked solutions.

What’s inside:
Easy: single applications on powers of a bracket, e^{f(x)}, ln(f(x)) and trig of a linear function, always identifying inner and outer explicitly.
Medium: composite trig such as cos^3 x and sin^4 x, sqrt of a function, sec x from (cos x)^-1, ln of a composite, and evaluating a derivative at a point.
Hard: two-layer chains (e^{sin 2x}, ln(cos 3x)), a double square root, stationary points needing product-and-chain, a show-that with a collapsing fraction, and connected rates of change (balloon and cube).

Every solution names the inner and outer functions, keeps one atomic step per line with an annotation on each, and places M1 and A1 marks where the mark scheme awards them.

Ideal for: Year 12 and 13 students sitting Edexcel A-Level Mathematics (9MA0) Paper 1 / Paper 2 Pure, plus tutors and teachers building targeted practice. Print-friendly, hand straight to students.