Edexcel Mathematics January 2023 · Paper 1 · Question 12 · ExamRizz

ExamRizzEdexcel MathematicsMathematics

January 2023 · Paper 1 · Question 12 · 5 marks

12. y = sin x where x is measured in radians. Use differentiation from first principles to show that d dy x = cos x You may • use without proof the formula for sin( A ± B ) • assume that as h → 0, sinh h → 1 and cosh h−1 → 0 (5) 33

Lesson: Introduction to Differentiation and First Principles (Polynomials)