All I know is that it converges. Really have nothing more to say.
Last edited by lausing; Feb 21st 2010 at 09:51 PM.
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Hello, lausing! . . .
The right side is a geometric series with: . . . Its sum is: .
Hence  becomes: .
Also, the question is erroneously posted in calculus rather than linear algebra or something, since it orginally was about derivatives. Whoops!
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