Geometric series

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Evaluate the infinite geometric series 0.4+0.12+0.036+0.0108...

SilviaJendeukie Apr 7, 2024

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1⁺⁰ Answers

+128578

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r = .12 / .4 = 12 / 40 = 3/10

Sum =

First term / [ 1 - r ] =

.4 / [ 1 - 3/10] =

.4 / .7 =

4 / 7

CPhill Apr 7, 2024

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