The calculation of calculus How to solve indefinite integral for compound function For example, how can X / (1 + x), sin2x find their indefinite integrals

The calculation of calculus How to solve indefinite integral for compound function For example, how can X / (1 + x), sin2x find their indefinite integrals

The method of finding indefinite integral the method of changing elements the method of changing elements (1): Let f (U) have the original function f (U), u = g (x) differentiable, then f [g (x)] is the original function of F [g (x)] g '(x)