he298c
2021-01-31
Answered

Use the formula for the sum of a geometric series to find the sum, or state that the series diverges.

$\sum _{n=2}^{\mathrm{\infty}}\frac{7\cdot (-3{)}^{n}}{{5}^{n}}$

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wornoutwomanC

Answered 2021-02-01
Author has **81** answers

Given that:

The series is

By using,

Geometric series test :

A geometric series

Consider the series,

The series

Also,

Then,

By the geometric series,

The series

Then,

Therefore,

The series

Jeffrey Jordon

Answered 2021-12-27
Author has **2313** answers

Answer is given below (on video)

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