Edexcel Mathematics June 2022 · Paper 2 · Question 3 · ExamRizz

ExamRizzEdexcel MathematicsMathematics

June 2022 · Paper 2 · Question 3 · 4 marks

3. A sequence of terms a1, a2, a3, … is defined by a1 = 3 an+1 = 8 − an (a) (i) Show that this sequence is periodic. (ii) State the order of this periodic sequence. (2) (b) Find the value of an n=∑ 185 (2) 7

Lesson: Binomial Expansion for Positive Integer n