So it's a geometric series with and . So = ?

The solutions manual had . Am I doing this right?

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- July 20th 2011, 10:09 PMdeezyFind the sum of the series.

So it's a geometric series with and . So = ?

The solutions manual had . Am I doing this right? - July 20th 2011, 10:18 PMProve ItRe: Find the sum of the series.
What you have done looks fine. Does your solutions manual post their full solution or just the answer?

- July 20th 2011, 10:27 PMdeezyRe: Find the sum of the series.
There was a full solution, but I only copied down . I may have copied down the wrong answer... and I won't have a chance to check until tomorrow.

- July 21st 2011, 01:27 PMdeezyRe: Find the sum of the series.
Well, the solutions manual had:

.

But was not the original problem, was. So, pretty safe to say that's a typo?