Integrate $\int \frac{1}{1+ \tan x}dx$
15185
Simplest way to integrate $\int \frac{1}{1+\tan x}dx,$
81914
Integrating $\int_0^1 \frac {\log(1-x)\log^2(1+x)}x \mathrm{d}x$
32312
Evaluating the integral $\int \frac{x^2+x}{(e^x+x+1)^2}dx$
6717
Evaluation of $\int_{\frac{1}{2014}}^{2014} \frac{\tan^{-1}x}{x} dx$
117101
Integrate $\int \frac{dx}{\sqrt{-ax^2 + bx +c}} $
89387
Integrate : $\int \frac{x^2}{(x\cos x -\sin x)(x\sin x +\cos x)}dx$
80736
How to integrate $\int\frac{\sqrt{1+x^2}}{x}\,\mathrm dx$
44059
Evaluating $\int_{-1}^{1}\frac{\arctan{x}}{1+x}\ln{\left(\frac{1+x^2}{2}\right)}dx$
61443
So close yet so far Finding $\int \frac {\sec x \tan x}{3x+5} dx$
42992
How do I integrate the following? $\int{\frac{(1+x^{2})\mathrm dx}{(1-x^{2})\sqrt{1+x^{4}}}}$
61740
Evaluate the integration : $\int\sqrt{\frac{(1-\sin x)(2-\sin x)}{(1+\sin x)(2+\sin x)}}dx$
95068
Integral of $\frac{1}{2x}$
95403
Evaluating $\int \frac{\sec^2 x}{(\sec x + \tan x )^{{9}/{2}}}\,\mathrm dx$
117446
calculation of $\int_{0}^{1}\tan^{-1}(1-x+x^2)dx$
63016
Integration of $\int\frac{1}{x^{4}+1}\mathrm dx$
112551
Demystify integration of $\int \frac{1}{x} \mathrm dx$
82170
Solve $x = \frac{1}{2}\tan(x)$