Evaluating $\int \frac{1}{{x^4+1}} dx$
63016
Integration of $\int\frac{1}{x^{4}+1}\mathrm dx$
104583
Simplify $\int \frac{1}{\sqrt{2-x^2}}\, dx$
63251
Evaluation of $\int^1_0\frac{x^b-x^a}{\ln x} d x=\ln{{\frac{1+b}{1+a}}}$
60182
Evaluate $\int\frac{1}{\sin(x-a)\sin(x-b)}\,dx$
65982
Evaluate the improper integral $ \int_0^1 \frac{\ln(1+x)}{x}\,dx $
132124
$\int_{0}^{\infty}\frac{x}{x^3+1}dx$ =?
145590
Compute the integral $\int\frac{dx}{(x^2-x+1)\sqrt{x^2+x+1}}$
129675
How to integrate $\int \frac{1}{\sin^4x + \cos^4 x} \,dx$?
92637
Evaluating $\int \frac{\operatorname dx}{x\log x}$
147977
Evaluate $\int_0^1\left(\frac{x-1}{x+1}\right)^n\frac{1}{\ln x} \,dx$
67263
Compute integral $\int_{-\infty}^\infty \frac{x^4}{1+x^8} \, dx$
99584
Evaluation of $\int \frac{\sqrt{\sin ^4x+\cos ^4x}}{\sin ^3x \cos x }dx$
147641
How to evaluate $\int \frac { \sin x+\cos x }{ \sin^4 x+\cos^4x}\, dx$?
71611
Evaluating $\int\sqrt{\frac{1-x^2}{1+x^2}}\mathrm dx$
47452
Calculus Question: $\int_0^1\frac{(x-x^2)^4}{1+x^2}dx$
125735
How do I evaluate $\int_{1/3}^3 \frac{\arctan x}{x^2 - x + 1} \; dx$?
35861
Evaluate $\int_0^\infty\frac{\ln x}{1+x^2}dx$