Question

Evaluate the following sum 1+1/4-1/16-1/64+1/256+1/1024--++ ...

Evaluate the following sum

1+1/4-1/16-1/64+1/256+1/1024--++ ...

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Answer #1

Here we have used the result the absolute convergence implies the sum remains unaltered by any change in order of its term .

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