Evaluating an improper integral using double integrals
41738
Best way to integrate $ \int_0^\infty \frac{e^{-at} - e^{-bt}}{t} \text{d}t $
75577
Double integral over a typical region.
70830
How to evaluate $\int_{0}^{\infty}\exp(-x^2-1/x^2)dx$?
93071
Is there a way to calculate the improper integral $\int_0^\infty \big(\frac{\ln x}{x - 1}\big)^2 dx$?
109385
Evaluating the integral $\int_{-\ln 2}^{\ln 2} e^{-x}(\sin x+x)^{1/3}dx$
22768
Solving a double integration in parametric form
123532
An incorrect answer for an integral
124677
Substitution needed for calculating an integral
150843
Evaluation of $\int_0^{\pi/4} \sqrt{\tan x} \sqrt{1-\tan x}\,\,dx$
13674
Divergence of an improper integral
17337
Double Integral $\int\limits_0^a\int\limits_0^a\frac{dx\,dy}{(x^2+y^2+a^2)^\frac32}$
49333
How to evaluate improper integral $\int_{0}^{\infty}\frac{\tan^{-1}{x}}{e^{ax}-1}dx$?
59532
Evaluation of this integral.
58013
Integral of Even and Odd functions
121736
An improper integral : $\int_{0}^\infty {\ln(a^2+x^2)\over{b^2+x^2}}dx$
127711
Evaluating $\int_{0}^{1}\int_{0}^{1}\sqrt{x^{2}+y^{2}}dxdy$ using polar coordinates.
69978
Evaluating $\int_1^\infty \frac{1}{x(x^2+1)}\ dx$