Edexcel Mathematics October 2020 · Paper 1 · Question 15 · ExamRizz

ExamRizzEdexcel MathematicsMathematics

October 2020 · Paper 1 · Question 15 · 7 marks

15. The curve C has equation x2 tan y = 9 0 < y < 2π (a) Show that d dy x = − +18 814x x (4) (b) Prove that C has a point of inflection at x = 274 (3) 47 48 49