Finding the improper integral $\int^\infty_0\frac{1}{x^3+1}\,dx$
57224
Compute $\int_0^\infty \frac{dx}{1+x^3}$
96191
Integral $\int_0^{\infty} \sin(x^2)/x^2\,dx$
98710
Finding $\int_0^{\infty}xe^{-\lambda x} \, dx$
100485
How do I evaluate the integral $\int_0^{\infty}\frac{x^5\sin(x)}{(1+x^2)^3}dx$?
101587
Calculating $\int_{- \infty}^{\infty} \frac{\sin x \,dx}{x+i} $
63756
Convergence or divergence of the integral $\int\limits_{10}^\infty \frac{e^x}{x^{1 + \frac{1}{x}} (e^x -1)} \,dx$
122843
Finding $\int_0^\infty \frac{\cos(ax)-\cos(bx)}{x}dx$
64743
How do I evaluate the integral $\int \frac{1}{x^3 -1}dx$
83966
Does $ \int_0^{\infty}\frac{\sin x}{x}dx $ have an improper Riemann integral or a Lebesgue integral?
112621
Finding $\int_{0}^{\infty} \frac{e^{3x}-e^x}{x(e^{3x}+1)(e^x+1)} dx$
9730
Solve the integral $\int_0^\infty x/(x^3+1) dx$
42758
How to find $ \int_0^\infty \dfrac x{1+e^x}\ dx$
49074
Compute $\int\limits_{-\infty}^{\infty}\frac{1}{(1+x^2)^{n+1}}dx$ via residue calculus.
11757
How can I compute the integral $\int_{0}^{\infty} \frac{dt}{1+t^4}$?
126046
solving the integral $ \int_0^\infty \dfrac{\sin xt}{x(x^2+1)} dx $
109901
Computing $\int_0^\infty\frac1{(x+1)(x+2)\cdots(x+n)}\mathrm dx $
21857
Seeking methods to solve: $\int_0^\infty \frac{\ln(t)}{t^n + 1}\:dt$