How to solve the integral $\int \frac{1}{e^x}\,dx$ step by step?
99033
How to solve the definite integral $\int_{-4}^{-2}e^{-x}\,dx$?
17852
$\int \frac{dx}{x\log(x)}$
83325
Integral of $\frac{\sqrt{x^2+1}}{x}$
81831
Evaluate $\int_0^{\infty}\frac{\log x}{1+e^x}\,dx$
31660
Integral $\int_{0}^{1}\left\{\frac{1}{x}\right\}\left\{\frac{1}{1-x}\right\}\left\{1-\frac{1}{x}\right\} d x=?$
67450
How do you integrate $e^{x^2}$?
98757
Solving an integral with substitution method
34762
Why isn't $\int \frac{1}{x}~dx = \frac{x^0}{0}$?
18732
How do I evaluate $\int \frac{\mathrm{d}x}{e^x + 1} $?
140203
Find the value of $\int_{-\infty}^{\infty} \frac{e^{-x^2}}{1+x^2} dx$ .
46898
Fast calculation for $\int_{0}^{\infty}\frac{\log x}{x^2+1}dx=0$
39629
Indefinite integration of $\int \frac{1}{1+\sqrt{x^2+2x+2}}dx$
70013
How to calculate $\int \frac{x^2 }{(x^2+1)^2} dx$?
104691
Integration of $\int_{0}^{1} \frac{x^k}{1-x} dx$
132388
Calculate $I=\int_0^1\frac{\ln(1+x)}{1+x^2}\,dx$
108554
Integrating $\int_0^\infty\frac{1}{1+x^6}dx$
121403
How to integrate $ \int x^n e^x dx$?