Solving the integral $\int\frac{1}{\sqrt{x^2+1}}\,dx$
40310
How to integrate $\frac{1}{\sqrt{1+x^2}}$ using substitution?
42992
How do I integrate the following? $\int{\frac{(1+x^{2})\mathrm dx}{(1-x^{2})\sqrt{1+x^{4}}}}$
149341
Help me evaluate $\int_0^1 \frac{\log(x+1)}{1+x^2} dx$
138968
how to integrate $\frac{1}{\sqrt{e^{2x}+e^x+1}}$
21375
The integral $\int_0^\infty \dfrac{x \sin(x)}{x^2+1} dx$
152977
Integrate $\int\sqrt{x+\sqrt{x^{2}+2}} dx$ .
156215
Integral $\int\frac{2x^2}{2x\cos(2x)+(x^2-1)\sin(2x)} \mathrm d x$
26814
Solve $\int \frac{1}{\sin ^{\frac{1}{2}}x \cos^{\frac{7}{2}}x}dx$
83801
Finding $\int \frac {dx}{\sqrt {x^2 + 16}}$
81914
Integrating $\int_0^1 \frac {\log(1-x)\log^2(1+x)}x \mathrm{d}x$
88368
Evaluating $\int_0^1 \sqrt{1 + x ^4 } \, d x $
63016
Integration of $\int\frac{1}{x^{4}+1}\mathrm dx$
62840
Seemingly Simple Integral $\int_0^1\frac{x^2\ln x}{\sqrt{1-x^2}}dx$.
45872
Integration: $\int\frac{1}{(x^2+x+1)^{1/2}} dx$
144644
Solution of $\frac{dy}{dx}=\frac{1}{xy(x^2 \sin y^2+1)}$
126046
solving the integral $ \int_0^\infty \dfrac{\sin xt}{x(x^2+1)} dx $
70013
How to calculate $\int \frac{x^2 }{(x^2+1)^2} dx$?