Mathematics 9709 · AS & A Level · Series

Series — practice question

The initial term of a geometric progression is $5\tfrac{1}{3}$, while its fourth term is $2\tfrac{1}{4}$.

(i)[3]

Find the common ratio for the progression.

(ii)[2]

Find the sum to infinity for the series.

Worked solution & mark scheme

This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Forms equation $2\frac{1}{4} = 5\frac{1}{3} r^3$” …