Arjang
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 Mar18 revised Calculus Proving extreeme usage of $, trim the$ man! Mar17 comment Integral $\int \frac{x^2}{\sqrt[] {3-x^3} } \operatorname d \! x$ Changed your first image to a Mathjax, look up the FAQ for the site on how to do latex or google Mathjax. Mar17 revised Integral $\int \frac{x^2}{\sqrt[] {3-x^3} } \operatorname d \! x$ added 16 characters in body; edited title Mar17 comment Whether it is the pigeonhole principle? It would be good that you include your own thoughts on this problem. Mar2 comment Prove $1+2\sqrt3$ is not a rational number 25 years ago one used to say rationals are closed under addition and multiplication, is this new terminology now? Mar2 comment Prove $1+2\sqrt3$ is not a rational number I didn't down vote. What does " addition and multiplication is stable" means? Feb28 revised Sum $\sum_{n=1}^{\infty}\frac{1}{(9n-1)(9n+1)}$ edited tags; edited title Feb26 revised Sum $\sum _{k=0}^{\infty } \frac{(-1)^k \psi (k+1)}{\left(k-\frac{3}{2}\right)^2}$ edited title Feb25 revised Series $\frac{1}{4}+\frac{1\cdot 3}{4\cdot 6}+\frac{1\cdot 3\cdot 5}{4\cdot 6\cdot 8}+\cdots$ deleted 3 characters in body; edited title Feb25 revised Integral $\int_{0}^{\pi/2} \frac{\pi^{(x^{e})}\sin(x)\tan^{-1}(x)}{\sinh^{-1}\left({1+\cos(x)}\right)} dx$ edited title Feb24 asked Cases for Fermat like equations $a_1^{n_1}+a_2^{n_2}+\cdots+a_m^{n_m}=z^c$ Feb21 comment The value of $\int _{0}^{1}x^{99}(1-x)^{100}dx$ is @NS : was not having a go at you, just letting you know. And of course I might be wrong Feb21 comment The value of $\int _{0}^{1}x^{99}(1-x)^{100}dx$ is There have been similat questions to this before on this site Feb19 revised Integral $\int \limits _0 ^\pi |\sin x + \cos x|\; dx$ deleted 34 characters in body; edited title Feb18 comment How can I prove that these two series diverge? Does it diverge for all x or for the values greater than lets say x=1/8? Feb17 revised Integral $\int_0^\infty\sin{(x^4)} dx$ edited title Feb17 revised Prove $\lim_{n\to\infty}\sqrt{20+\sqrt{20+\sqrt{20+\dots+\sqrt{20}}}}=5$ edited title Feb15 revised Integral $\int x^7\cos x^4 dx$ edited title Feb13 revised Integral $\int\frac{dx}{x^5+1}$ edited title Feb13 revised Integral $\int_{0}^\infty (\cos(4x))^{\sin(x)} \text{ dx} =\mbox{?}$ edited title