Integrate $ \int \frac{x^2 + x}{(e^x + x +1)^2}dx $
32312
Evaluating the integral $\int \frac{x^2+x}{(e^x+x+1)^2}dx$
130736
Integrating $\int^0_\pi \frac{x \sin x}{1+\cos^2 x}$
53438
I need assistance in integrating $ \frac{x \sin x}{1+(\cos x)^2}$
38515
Integral of $\frac{1}{x^4+1}$
21390
How to integrate $\int_0^{\infty} \frac{e^{ax} - e^{bx}}{(1 + e^{ax})(1+ e^{bx})}dx$ where $a,b > 0$.
60654
Integrate $\int_0^{2 \pi } \frac{1}{(a+b \cos^2 (x))^2} \, \mathrm{d}x$
37097
Integral $\int \frac{\sqrt{\sin x}}{\sqrt{\sin x} + \sqrt{\cos x}} dx$
150890
Evaluating $\int_{\mathbb{R}}\frac{\exp(-x^2)}{1+x^2}\,\mathrm{d}x$
67608
Integration of $1/(x^2+x\sqrt{x})$
108554
Integrating $\int_0^\infty\frac{1}{1+x^6}dx$
80736
How to integrate $\int\frac{\sqrt{1+x^2}}{x}\,\mathrm dx$
46217
A nasty indefinite integral $ \int \frac{1}{x(x+1)(x+2)(x+3)(x+4) ... (x+m)} dx $
98838
How to evaluate $\int_0^1 \frac{\ln(x+1)}{x^2+1} dx$
157931
Contour integration of $\int \frac{dx} {(1+x^2)^{n+1}}$
152977
Integrate $\int\sqrt{x+\sqrt{x^{2}+2}} dx$ .
158760
How calculate the indefinite integral $\int\frac{1}{x^3+x+1}dx$
61740
Evaluate the integration : $\int\sqrt{\frac{(1-\sin x)(2-\sin x)}{(1+\sin x)(2+\sin x)}}dx$