1,839 reputation
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visits member for 3 years, 6 months
seen Mar 8 at 15:50

Quite a random guy here. 90% an engineer (Electrical Power Engineering student) and 10% a physicist. My favorite formula in mathematics:

$\int_{0}^{\infty}x^{-x}\ dx=1.9954...$

Favorite quote from mathematics:

In the theory of probability generating functions have been used since DeMoivre and Laplace, but the power and the possibilities of the method are rarely fully utilized.

(William Feller)


Mar
19
awarded  Nice Answer
Mar
8
answered Find the integral $\int \frac{1}{x^2 \cdot \tan(x)} \ dx$
Feb
2
answered Evaluating $\int_{0}^{\infty} \frac{x^{3}- \sin^{3}(x)}{x^{5}} \ dx $ using contour integration
Jan
23
answered Find $\sum_{n=1}^{\infty}\int_0^{\frac{1}{\sqrt{n}}}\frac{2x^2}{1+x^4}dx$
Nov
21
awarded  Nice Answer
Oct
5
awarded  Yearling
Sep
17
answered How to calculate $\int_{0}^{+\infty}\exp(-ax^2-b/x^2)\,dx$ for $a,b>0$
Aug
25
answered Asymptotic expansion of a function $\frac{4}{\sqrt \pi} \int_0^\infty \frac{x^2}{1 + z^{-1} e^{x^2}}dx$
Aug
14
awarded  Electorate
Aug
13
answered Evaluating $\int^1_0 \frac{\log(1+x)\log(1-x) \log(x)}{x}\, \mathrm dx$
Aug
12
accepted Evaluating $\int_{0}^{\infty}\frac{1}{x}\big (\frac{\sinh ax}{\sinh x}-ae^{-2x}\big )dx$
Aug
10
comment Evaluating $\int_{0}^{\infty}\frac{1}{x}\big (\frac{\sinh ax}{\sinh x}-ae^{-2x}\big )dx$
Very interesting approach and blog post! I'll look into it carefully.
Aug
9
awarded  Nice Question
Aug
9
asked Evaluating $\int_{0}^{\infty}\frac{1}{x}\big (\frac{\sinh ax}{\sinh x}-ae^{-2x}\big )dx$
Jul
30
comment show that $\int_{0}^{\infty } \frac{\sin (ax)}{x(x^2+b^2)^2}dx=\frac{\pi}{2b^4}(1-\frac{e^{-ab}(ab+2)}{2})$
@hmedan.mnsh i added a link
Jul
30
revised show that $\int_{0}^{\infty } \frac{\sin (ax)}{x(x^2+b^2)^2}dx=\frac{\pi}{2b^4}(1-\frac{e^{-ab}(ab+2)}{2})$
added 128 characters in body
Jul
29
answered show that $\int_{0}^{\infty } \frac{\sin (ax)}{x(x^2+b^2)^2}dx=\frac{\pi}{2b^4}(1-\frac{e^{-ab}(ab+2)}{2})$
Jul
5
answered Example of integral pairs or triples ($I$, $J$, $K$…)
Jun
22
answered Taylor series of an integral
Jun
17
answered Supposedly simple integral