integral of (2xy^2-y^3)

解答

\int (2 x y^{2} - y^{3}) d x

- y^{3} x + y^{2} x^{2} + C

求解步骤

\int 2 x y^{2} - y^{3} d x

使用积分加法定则:

\int f (x) \pm g (x) d x = \int f (x) d x \pm \int g (x) d x

= - \int y^{3} d x + \int 2 y^{2} x d x

\int y^{3} d x = y^{3} x

\int 2 y^{2} x d x = y^{2} x^{2}

= - y^{3} x + y^{2} x^{2}

解答补常数

= - y^{3} x + y^{2} x^{2} + C

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