What is the sum from n=1 to infinity of 8((1/5)^n) ?

The sum from n=1 to infinity of 8((1/5)^n) is 2

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sum from n=1 to infinity of 8((1/5)^n)

n = 1 \sum \infty 8 ((\frac{1}{5})^{n})

2

Solution steps

n = 1 \sum \infty 8 (\frac{1}{5})^{n}

Apply the constant multiplication rule:

\sum c \cdot a_{n} = c \cdot \sum a_{n}

= 8 \cdot n = 1 \sum \infty (\frac{1}{5})^{n}

n = k \sum \infty (a_{n}) = n = 0 \sum \infty (a_{n}) - a_{0} - a_{1} - \dots a_{k - 1}

= 8 (n = 0 \sum \infty (\frac{1}{5})^{n} - (\frac{1}{5})^{0})

n = 0 \sum \infty (\frac{1}{5})^{n} = \frac{5}{4}

= 8 (\frac{5}{4} - (\frac{1}{5})^{0})

Simplify

8 (\frac{5}{4} - (\frac{1}{5})^{0}) : 2

= 2

x \to 0 lim (\frac{6}{x} - \frac{6}{x ^{2} - x})

\int_{1}^{9} \frac{1}{9 - x} d x

\frac{d}{d y} (y z e^{x z})

\int - 32 x + 64 d x

ln (5 t)

What is the sum from n=1 to infinity of 8((1/5)^n) ?
The sum from n=1 to infinity of 8((1/5)^n) is 2