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Feb
6
accepted Question about infinity sum
Feb
6
accepted Complex integration substitution
Feb
6
comment Complex integration substitution
Thank you for your clear explanation
Feb
6
asked Complex integration substitution
Feb
5
comment Linear transformation and eigenvalues
@user61062 mirrors
Feb
5
answered Linear transformation and eigenvalues
Feb
4
awarded  Custodian
Feb
4
reviewed Satisfactory Find the coordinates of a point on a circle
Feb
4
comment Question about infinity sum
@GerryMyerson Did it
Feb
4
answered Question about infinity sum
Feb
4
comment Question about infinity sum
@GerryMyerson Yes, I just saw it, thanks.
Feb
4
asked Question about infinity sum
Feb
1
comment Prove that for $a > 0$, $\lim_{n \rightarrow \infty}{\frac{a^n}{n!}=0}$
The proof is correct but, as @DavidMitra says, you're using a sledgehammer :) So I don't find it very clean, you should be able to prove then that those series are equal to $e^x$ and that they converge, using taylor's theorem also does the trick but it's more advanced that the analysis corresponding to this. Final message: I would look for another proof, but if I saw this in an exam and nothing came to my mind, I would undoubtedly use yours and it would be correct.
Jan
30
answered Finding limit of the sequence $A_n = \frac{n^3 + n!}{2^n + 3^n}$
Jan
27
comment Group relations and generators
@ThomasAndrews I wrote my work, is anything wrong?
Jan
27
revised Group relations and generators
added 215 characters in body
Jan
26
comment Group relations and generators
@anon yes, that was a typo. I wrote what I've done.
Jan
26
revised Group relations and generators
added 338 characters in body
Jan
26
revised Group relations and generators
added 8 characters in body
Jan
26
comment Group relations and generators
Yes it's abelian. I got the twelve just by transforming the relations and getting new generators, until I had something of the form $zu_1=0$ So I know that corresponds to $Z/xZ$