Integral of exponential function with polynomial arguments with degree two $\int_{-\infty}^{\infty}e^{-ax^2}e^{-2bx}dx$.
4287
Proving $\int_{0}^{\infty} \mathrm{e}^{-x^2} dx = \frac{\sqrt \pi}{2}$
112621
Finding $\int_{0}^{\infty} \frac{e^{3x}-e^x}{x(e^{3x}+1)(e^x+1)} dx$
128572
How $\int_{-\infty}^{\infty}\frac{dx}{1+x^2}$ exists?
140203
Find the value of $\int_{-\infty}^{\infty} \frac{e^{-x^2}}{1+x^2} dx$ .
121736
An improper integral : $\int_{0}^\infty {\ln(a^2+x^2)\over{b^2+x^2}}dx$
76400
Finding $\int^{\infty}_{0}\frac{\ln^2(x)}{(1-x^2)^2} dx$
93759
Evaluate $\int_{0}^{\infty} \frac{e^{ax}-e^{bx}}{(1+e^{ax})(1+e^{bx})} dx$
109385
Evaluating the integral $\int_{-\ln 2}^{\ln 2} e^{-x}(\sin x+x)^{1/3}dx$
60796
Integrating $\int^{\infty}_0 e^{-x^2}\,dx$ using Feynman's parametrization trick
62109
$\int_{-\infty}^{\infty} \frac{\cos(αx)}{(x^2+1)(x^2+4)} \mathrm dx$ using Complex methods
24716
$\int_0^\infty\frac{\log x dx}{x^2-1}$ with a hint.
10547
$\int_0^\infty \frac{\sin(x^2+ax)}{x}\,dx$ converges
142516
Evaluating the integral, $\int_{0}^{\infty} \ln\left(1 - e^{-x}\right) \,\mathrm dx $
70830
How to evaluate $\int_{0}^{\infty}\exp(-x^2-1/x^2)dx$?
117751
An integral of a rational function of logarithm and nonlinear arguments
31964
Evaluating $\int_0^{\infty}\frac{\ln(x^2+1)}{x^2+1}dx$
130120
Orders of Growth between Polynomial and Exponential