integral from-1 to 2 of 2x-1

解答

\int_{- 1}^{2} 2 x - 1 d x

0

求解步骤

\int_{- 1}^{2} 2 x - 1 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_{- 1}^{2} 2 x d x - \int_{- 1}^{2} 1 d x

\int_{- 1}^{2} 2 x d x = 3

\int_{- 1}^{2} 1 d x = 3

= 3 - 3

化简

= 0

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