Differentiation from First Principles | 25 Worked Examples | Edexcel A-Level Maths

A complete worked-solutions pack on Differentiation from First Principles for Edexcel A-Level Maths (9MA0). 25 exam-style questions graded Easy → Standard → Challenging, each with a full step-by-step model solution and per-step [M1]/[A1] marks laid out exactly as in the mark scheme.

Covers: applying the limit definition f’(x) = lim(h→0) [f(x+h) - f(x)]/h to polynomials, surds and reciprocals; differentiating sin x and cos x from first principles using the addition formulae and the standard small-angle limits (sin h)/h → 1 and (cos h - 1)/h → 0; and the trickier algebraic manipulation questions that examiners use to separate the A and A* candidates.

Ideal for A-Level students revising Pure differentiation, teachers wanting a ready-to-print worksheet with answers, or anyone wanting targeted practice on the one differentiation skill that is almost always examined as a ‘show that’ proof. Clean, printable layout with a formula box on the cover page.