Integrate $\int_{-\infty}^\infty e^{\frac{-x^2}{a^2}} dx$
64314
Proof of certain Gaussian integral form
128600
How to evaluate this integral$\int_{-\infty}^\infty\dfrac{\omega^\alpha e^{i\omega t}}{(\omega_0^2-\omega^2)^{2}+4(\zeta\omega_0\omega)^2}\,d\omega$
67450
How do you integrate $e^{x^2}$?
56815
how to solve $\int_{-\infty}^\infty e^{-x^2-x{\tau}} \cdot x\ dx$?
70830
How to evaluate $\int_{0}^{\infty}\exp(-x^2-1/x^2)dx$?
106812
Find $\int_{0}^{\infty} \frac{\ln(x)}{1+x^2}dx$
110922
What are different ways to compute $\int_{0}^{+\infty}\frac{\cos x}{a^2+x^2}dx$?
81831
Evaluate $\int_0^{\infty}\frac{\log x}{1+e^x}\,dx$
21390
How to integrate $\int_0^{\infty} \frac{e^{ax} - e^{bx}}{(1 + e^{ax})(1+ e^{bx})}dx$ where $a,b > 0$.
10319
Definite Integral $\int_{-\infty}^{\infty}\frac{x\sin x}{(x^2+a^2)(x^2+b^2)}\,\mathrm{d}x$
57224
Compute $\int_0^\infty \frac{dx}{1+x^3}$
85618
Integral of $\frac{x^\alpha}{(1 + x^2)^2}$ from 0 to $\infty$ using contour integration for $-1 < \alpha <3$
48233
Evaluating $\int_0^\infty \frac{dx}{1+x^4}$.
129892
show $\int_0^{\infty} \frac{x\sin ax}{x^2+t^2}dx = \frac{\pi}{2}e^{-at}$
21375
The integral $\int_0^\infty \dfrac{x \sin(x)}{x^2+1} dx$
76400
Finding $\int^{\infty}_{0}\frac{\ln^2(x)}{(1-x^2)^2} dx$
120899
Integration with a constant "a": $ \int_0^a \frac1{\sqrt {a^2-x^2}} dx $