Determine the sum of the series .

MATHEMATICS · Subjective · A Level · Mathematics · Sequences and series · Sequences and series

Problem

Determine the sum of the series ∑n=3∞(−2) n+15 n\displaystyle\sum_{n=3}^{\infty}\dfrac{(-2)^{\,n+1}}{5^{\,n}}.

Related theory

Browse the problem library