SymPy Gamma

SymPy:

integrate (1/(x**2+1),(x,0,oo ))

$\int_{0}^{\infty} \frac{1}{x^{2} + 1}\, dx$

Antiderivative forms:

Integral Steps:

integrate(1/(x**2 + 1), (x, 0, oo))

Polynomial with this root:

minpoly(pi/2)

See what Wolfram|Alpha has to say.

Need more control? Try SymPy Live.