Damus
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rtn
@rtn
At the moment I'm going revisiting proving different series using mathematical induction. I do wonder though where all the different problems come from.

Example. Prove that SUM(k/2^k, 1, n) = 2 - (n+2)/2^n

I'm guessing all the professors out there don't have the time coming up with all these problems and I suspect there are some well known sources out there they in turn can get problems from?