integral from 1 to 10 of 1/((x-2)^{1/3)}

解答

\int_{1}^{10} \frac{1}{( x - 2 ) ^{\frac{1}{3}}} d x

\frac{9}{2}

十进制

4.5

求解步骤

\int_{1}^{10} \frac{1}{( x - 2 ) ^{\frac{1}{3}}} d x

找到无定义的点（奇点）:

x = 2

如果存在

b, a < b < c, f (b) =

无定义

, \int_{a}^{c} f (x) d x = \int_{a}^{b} f (x) d x + \int_{b}^{c} f (x) d x

= \int_{1}^{2} \frac{1}{( x - 2 ) ^{\frac{1}{3}}} d x + \int_{2}^{10} \frac{1}{( x - 2 ) ^{\frac{1}{3}}} d x

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

\int_{2}^{10} \frac{1}{( x - 2 ) ^{\frac{1}{3}}} d x = 6

= - \frac{3 ( - 1 ) ^{\frac{2}{3}}}{2} + 6

化简

- \frac{3 ( - 1 ) ^{\frac{2}{3}}}{2} + 6 : \frac{9}{2}

= \frac{9}{2}