Edexcel Mathematics Specimen paper · Paper 1 · Question 3 · ExamRizz

ExamRizzEdexcel MathematicsMathematics

Specimen paper · Paper 1 · Question 3 · 4 marks

3. A sequence of numbers a1, a2, a3,... is defined by a1 = 3 a n a n + 1 = a n − 3 − 2 , n ∈  100 (a) Find ar ∑ r= 1 100 99 (b) Hence find a a r ∑ ∑+ r r r

Lesson: Binomial Expansion for Positive Integer n