Integrate $\int_{-\infty}^{+\infty}e^{-2x^2 + 7}dx$
8934
How do I solve this improper integral: $\int_{-\infty}^\infty e^{-x^2-x}dx$?
140638
Integrating $\int_0^{\infty} \frac{dx}{1+x^3}$ using residues.
9730
Solve the integral $\int_0^\infty x/(x^3+1) dx$
84034
Evaluate $\int_{-\infty}^{\infty} \chi_{[0,1]}(x-y) \chi_{[0,1]}(y) \, \mathrm{d}y$
29602
Integral $ \int_{-\pi/2}^{\pi/2} \frac{1}{2007^x+1}\cdot \frac{\sin^{2008}x}{\sin^{2008}x+\cos^{2008}x}dx $
80903
Help with integrating $\int_0^{\infty} \frac{(\log x)^2}{x^2 + 1} \operatorname d\!x$ - contour integration?
157255
Using residue theorem to integrate from $-\infty$ to $\infty$
128572
How $\int_{-\infty}^{\infty}\frac{dx}{1+x^2}$ exists?
57224
Compute $\int_0^\infty \frac{dx}{1+x^3}$
142516
Evaluating the integral, $\int_{0}^{\infty} \ln\left(1 - e^{-x}\right) \,\mathrm dx $
15625
Computing $\int_0^\infty\mathrm{d} x\frac{x}{e^x+1}$ with contour integration
124445
Integral of the form $\int_{0}^{\infty}e^{-ax}e^{-x^{4}}dx$
76400
Finding $\int^{\infty}_{0}\frac{\ln^2(x)}{(1-x^2)^2} dx$
140386
Integrate $\int {\dfrac{x^2+\left(n-1\right)n}{\left(x\sin x+n\cos x\right)^2}}dx $
89602
$ \int_{0}^{ \infty} \int_{0}^{ \infty} \frac { e^{-(x+y)}}{x+y} dx dy $
114195
Evaluating $\int_0^\infty \frac{\log (1+x)}{1+x^2}dx$
71742
integrate $\int_0^{2\pi} e^{\cos \theta} \cos( \sin \theta) d\theta$