integral from 6 to 7 of x^2-2x-24

解答

\int_{6}^{7} x^{2} - 2 x - 24 d x

\frac{16}{3}

十进制

5.33333 \dots

求解步骤

\int_{6}^{7} x^{2} - 2 x - 24 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_{6}^{7} x^{2} d x - \int_{6}^{7} 2 x d x - \int_{6}^{7} 24 d x

\int_{6}^{7} x^{2} d x = \frac{127}{3}

\int_{6}^{7} 2 x d x = 13

\int_{6}^{7} 24 d x = 24

= \frac{127}{3} - 13 - 24

化简

\frac{127}{3} - 13 - 24 : \frac{16}{3}

= \frac{16}{3}

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