Hard to find a question that is not already asked here.

Nov
14
awarded Notable Question
Oct
28
answered True or False: If $f$ is differentiable at $a$ and $g$ is differentiable at $f(a)$, then $(g\circ f)''(a)=g'(f(a))f''(a)+g''(f(a))(f'(a))^2$
Oct
26
comment Rolling dice problem
I also do not understand how you came to this answer.
Oct
26
comment Rolling dice problem
@AndréNicolas, Do you mean that distinguishable as in Dice1, dice2 and dice3? Organized counting would be the order we add them?
Oct
26
comment Show that $\int_{x=a}^{x=b} f'(x) g(x) dx=f(b)g(b)-f(a)g(a)-\int_{x=a}^{x=b} g'(x)f(x)\, dx$
why do you have $x=a$ and $x=b$ for the limits of the integral? I just haven't seen that notation before and wondering why and in which branch or location in the world it is used.
Oct
26
accepted Prime number in a grid for an identity matrix??
Oct
26
accepted Find $m$ such that the roots of this polynomial are greater than -1.
Oct
26
accepted Whats the mathematics behind this type of taking the rope out puzzle.
Oct
26
accepted How do induction on a recursive defined function?
Oct
26
comment Why are there active users who do not ask questions?
@GerryMyerson I know that now from reading about him, and I was just trying to make a witty response and it wasn't very good. I just knew the guy loved to solve problems, and this site is not for problems that would expand mathematics - that would be math overflow. I could see him being like the users in the question posted, having a high score from answering so many questions here and then posting bounties on overflow.
Oct
25
reviewed Approve suggested edit on equation solver online
Oct
25
comment Why are there active users who do not ask questions?
@GerryMyerson from wikipedia: Paul Erdős (1913–1996) was an influential mathematician who spent a large portion of his later life writing papers with a large number of colleagues, working on solutions to outstanding mathematical problems. --- What I heard of him is that he traveled to solve problems.
Oct
24
revised Please help me understand the concept of variable, and differentiation of variables.
added info because the OP changed it a bit.
Oct
24
answered Please help me understand the concept of variable, and differentiation of variables.
Oct
24
comment Please help me understand the concept of variable, and differentiation of variables.
Do you understand the difference between $\delta x$ and $\mathrm{d}x$? Also if you did math olympiads then this should not be that difficult to understand.
Oct
24
answered Mathematicians' manual of style
Oct
24
comment Why are there active users who do not ask questions?
@Committingtoachallenge yes, that was the case.
Oct
24
answered Why are there active users who do not ask questions?
Oct
20
awarded Popular Question
Oct
3
revised Proving a Special Case of a Limit Theorem
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