So it's a geometric series with and . So = ? The solutions manual had . Am I doing this right?
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What you have done looks fine. Does your solutions manual post their full solution or just the answer?
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.
Well, the solutions manual had: . But was not the original problem, was. So, pretty safe to say that's a typo?
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