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visits member for 1 year, 9 months
seen Dec 11 '13 at 22:38

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Apr
13
awarded  Popular Question
Feb
16
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Feb
4
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Dec
9
comment Proving that $\sum_j x^j$ is differentiable $(-1,1)$
Ah, so it converges on every interval $[-\beta, \beta]$ for $|\beta| < 1$? Many thanks for your help @EricAuld
Dec
8
revised Proving that $\sum_j x^j$ is differentiable $(-1,1)$
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Dec
8
comment Proving that $\sum_j x^j$ is differentiable $(-1,1)$
Yes but I am not sure how to show that $\sum_j (j+1)x^j$ converges to a finite number for $|x| < 1$?
Dec
8
revised Showing that $\sum_j e^{-jx}x^j$ converges uniformly
added 17 characters in body
Dec
8
asked Proving that $\sum_j x^j$ is differentiable $(-1,1)$
Dec
8
accepted Showing that $\sum_j e^{-jx}x^j$ converges uniformly
Dec
8
comment Showing that $\sum_j e^{-jx}x^j$ converges uniformly
Hmm, thanks Mhenni! Any idea as to how I would actually compute the sum?
Dec
8
asked Showing that $\sum_j e^{-jx}x^j$ converges uniformly
Dec
3
accepted How to prove Riemann integrable with partitions
Nov
18
accepted How to show that $\sum {2^j + j \over 3^j - j}$ converges
Nov
16
asked How to show that $\sum {2^j + j \over 3^j - j}$ converges
Nov
8
comment How to prove Riemann integrable with partitions
I understand, however, I am trying to prove this Riemann integrability from first principles, and so would like to find a way that involves a choice of partition rather than appeal to another theorem
Nov
7
asked How to prove Riemann integrable with partitions
Nov
7
comment Squares of differentiable functions
Sorry @dfeuer I meant $(f(x))^2$. Thanks Daniel Fischer!
Nov
7
asked Squares of differentiable functions