40 fully worked differentiation-from-first-principles questions for OCR A A-Level Mathematics (H240, spec 1.07g and 1.07h), every line explained and annotated to the real OCR M/A/B/SC mark scheme.
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 ...