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

 Apr 7, 2024
 #1
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r =  .12 / .4  =  12 / 40 =   3/10

 

Sum  = 

 

First term / [ 1 - r ]  =

 

.4 / [ 1 - 3/10]  =

 

.4 / .7   = 

 

4 /  7

 

 

cool cool cool

 Apr 7, 2024

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