How to integrate $\frac{1}{1+x^4}$
48233
Evaluating $\int_0^\infty \frac{dx}{1+x^4}$.
32312
Evaluating the integral $\int \frac{x^2+x}{(e^x+x+1)^2}dx$
2411
Integrate $\int_0^{\pi/2} \frac{1}{1+\tan^\alpha{x}}\,\mathrm{d}x$
74955
Simplify result of $\int_0^{\infty} \frac{1}{1+x^n}dx$
105765
Integrating $\frac{x^k }{1+\cosh(x)}$
104094
Integral of $\frac{1}{(1+x^2)^2}$
80736
How to integrate $\int\frac{\sqrt{1+x^2}}{x}\,\mathrm dx$
145183
finding $\int_0^\infty \dfrac{dx}{1+x^4}$ through complex analysis
89346
How do you integrate $\int \frac{1}{a + \cos x} dx$?
53438
I need assistance in integrating $ \frac{x \sin x}{1+(\cos x)^2}$
57224
Compute $\int_0^\infty \frac{dx}{1+x^3}$
91306
Integration of $\frac{1}{\log(x)}$
67263
Compute integral $\int_{-\infty}^\infty \frac{x^4}{1+x^8} \, dx$
40310
How to integrate $\frac{1}{\sqrt{1+x^2}}$ using substitution?
41416
Integrating $ \int_2^4 \frac{ \sqrt{\ln(9-x)} }{ \sqrt{\ln(9-x)}+\sqrt{\ln(x+3)} } dx. $
42758
How to find $ \int_0^\infty \dfrac x{1+e^x}\ dx$
158760
How calculate the indefinite integral $\int\frac{1}{x^3+x+1}dx$