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Jan
7
comment If $\sum_{n=1}^\infty a_n$ is convergent, then $\sum_{n=1}^{\infty} a_n\sin(n)$
@GEdgar: I thought about that fact that $|\sin(n)|\leq 1$ like Andrew mentioned this could be an "easier" example to simplify $\sin$ if you understand.
Jan
7
revised If $\sum_{n=1}^\infty a_n$ is convergent, then $\sum_{n=1}^{\infty} a_n\sin(n)$
edited body
Jan
7
answered If $\sum_{n=1}^\infty a_n$ is convergent, then $\sum_{n=1}^{\infty} a_n\sin(n)$
Jan
7
comment If $\sum_{n=1}^\infty a_n$ is convergent, then $\sum_{n=1}^{\infty} a_n\sin(n)$
Have you tried to think about $(-1)^n\cdot\frac{1}{n}\to 0$? This could be some motivation.
Jan
7
revised Differentiation with respect to integral boundary
Had some horrible mistakes in the example - these are fixed now.
Jan
7
comment Differentiation with respect to integral boundary
@macydanim: Holy shit... this looks awesome. I will write this down as a possible alternative solution.
Jan
7
asked Differentiation with respect to integral boundary
Dec
26
revised How to find this GCD?
deleted 1 characters in body
Dec
26
answered How to find this GCD?
Dec
24
awarded  Organizer
Dec
24
revised Studying Math, All Over Again
edited tags
Dec
24
answered Studying Math, All Over Again
Dec
22
comment Calculating a function limit
Exact duplicate of: math.stackexchange.com/q/263306/12864
Dec
21
comment Complicated limit calculation
What have you tried so far?
Dec
18
awarded  Announcer
Dec
17
awarded  Popular Question
Dec
10
accepted Extrema of the Gauß function
Dec
10
asked Extrema of the Gauß function
Dec
10
accepted Differentiability and extrema - counterexamples for a few statements
Dec
10
comment Antisymmetric and irreflexive relation which is not asymmetric
I see it now. Let's forget what I was talking about.