What is the sum from n=2 to infinity of (-0.85)^n ?

The sum from n=2 to infinity of (-0.85)^n is converges

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sum from n=2 to infinity of (-0.85)^n

n = 2 \sum \infty (- 0.85)^{n}

converges

Solution steps

n = 2 \sum \infty (- 0.85)^{n}

Apply Series Ratio Test:

converges

= converges

n = 0 \sum \infty \frac{1}{( 3 n + 1 ) ^{3}}

n = 0 \sum \infty (- \frac{6}{7})^{n}

n = 1 \sum \infty 90 (0.1)^{n}

i = 1 \sum \infty \frac{1}{i} - \frac{1}{i + 1}

n = 1 \sum \infty \frac{1}{5 + e ^{- n}}

What is the sum from n=2 to infinity of (-0.85)^n ?
The sum from n=2 to infinity of (-0.85)^n is converges