Integrate

Integrate[f, x] gives the indefinite integral.

Integrate[f, {x, xmin, xmax}] gives the definite integral.

Examples

Indefinite integral:

Integrate[x^2, x]
(* x^3/3 *)

Definite integral:

Integrate[Sin[x], {x, 0, Pi}]
(* 2 *)

Please visit the official Wolfram Language Reference for more details.