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1d
comment What is Gamma function?
much the same way you evaluate $\ln x$ at a specific point :)
1d
reviewed Approve What is Gamma function?
Jul
31
awarded  Peer Pressure
Jul
29
comment Can $\int_{0}^{1}\frac{x^{p}\ln^{q}(x+a)}{(x+a)^{b}}dx$ be expressed in a simple form?
wasn't your question alreeady answered? Or if you know the result but would like to know if there is a more explicit formula than @RobertIsrael gave, you should say so! :)
Jul
24
comment convergence in mean when mean is the constant?
@martingale Yes. Do not confuse limit of a sequence with limit of random variables though
Jul
24
comment One divided by infinity is not zero?
uncountable many numbers! :-)
Jul
24
answered Double Integral Set Up
Jul
23
accepted Fourier series of constant on $2\pi$ intervals
Jul
23
comment Fourier series of constant on $2\pi$ intervals
Thank you again! :)
Jul
23
comment Fourier series of constant on $2\pi$ intervals
@DanielFischer Oh right! I had completely missed that. Thanks! As usual, if you make an answer I'll gladly accept it :)
Jul
23
asked Fourier series of constant on $2\pi$ intervals
Jul
21
comment Is this function in $L^1_{loc}(\mathbb R^3)$
Perfect. Thanks again! :)
Jul
21
accepted Is this function in $L^1_{loc}(\mathbb R^3)$
Jul
21
comment Is this function in $L^1_{loc}(\mathbb R^3)$
@DanielFischer Oh dear.. You are right thank you! Go ahead and make that an answer if you want! :-)
Jul
21
asked Is this function in $L^1_{loc}(\mathbb R^3)$
Jul
20
comment When can I calculate a derivative in a point?
@user251257 Calculate the limit in $t=0$. That limit defines a function $g(x,t)$ and I want to calculate that in $t=0$. Note that I can't just put inside the limit $t=0$ (to have trivially equality with RHS) because then (as my example shows) I'd have something that does not exists, while the LHS is actually defined. If I'm wrong then please explain to me what $\mid_{t=0}$ means
Jul
20
comment When can I calculate a derivative in a point?
@user251257 What? What do you mean the equation is the very definition of partial derivative? I have $$\lim_{h \to 0} \frac{f(x + h, t) - f(x,t)}{h} \bigg|_{t = 0} = \lim_{h \to 0} \frac{f(x+h, 0) - f(x, 0)}{h}$$. Are they always equal? I don't think so, because as my example show, the LHS can exists while the RHS does not. That was the only point of the example. Under which conditions then it's true? Really, I have the feeling I am not being understood, which is probably my fault, but try to be more clear about what's wrong with my reasoning
Jul
20
revised When can I calculate a derivative in a point?
added 241 characters in body
Jul
20
revised When can I calculate a derivative in a point?
added 15 characters in body
Jul
20
asked When can I calculate a derivative in a point?