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Jan
7
comment If $\sum_{n=1}^\infty a_n$ is convergent, then $\sum_{n=1}^{\infty} a_n\sin(n)$
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
26
comment If something happens to 1 in 100 persons, is the chance of that person being you 50/50?
@phil: Assume we have a room where a few people are in there. You have no idea how many of them are female or male and therefore there is no way to say that the chance of one being male is 50/50. You have absolutely no information to rely on, and that is the issue with this problem.
Dec
26
comment If something happens to 1 in 100 persons, is the chance of that person being you 50/50?
@phil: So let's say you have $n$ blue and $k$ red balls without knowing what $n$ and $k$ are... yeah, we can't do anything because we only know that we have $n+k$ balls, but we need at least one of the numbers to be able to provide information about the problem and how to handle it.
Dec
26
revised If something happens to 1 in 100 persons, is the chance of that person being you 50/50?
added example for 50/50
Dec
26
answered If something happens to 1 in 100 persons, is the chance of that person being you 50/50?
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