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Infinite sum with solution but not sure how it got there

Posted 9 years ago

My summation is (4/3^k+-3^k/5^k) from 0 to infinity. I can see the series converges and what the value is 7/2 but no clue how they got there using the ratio test. Can anyone help me trace these steps or understand how to get the steps in wolframalpha or mathmatica?

POSTED BY: frank montoya
Posted 9 years ago

Why not look at each of the two terms separately and then add the two results?

POSTED BY: Jim Baldwin
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