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Hi, is my solution correct? If its wrong could I have some hints thanks.

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- Feb 2nd 2019, 05:54 PMcolintknQuestion on Geometric Sequences and Sum to Infinity.
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Hi, is my solution correct? If its wrong could I have some hints thanks. - Feb 2nd 2019, 06:17 PMDebstaRe: Question on Geometric Sequences and Sum to Infinity.
Looks good to me. I can't read your second last line, so not sure what reason you are giving for no sum to infinity.

You can (and should) always check your own answer. If a = 16 and r=-3/2, check that S(3) = 28 and Sum(6) = -133/2. Then you know whether your a and r are correct or not.