integral from 0 to 4 of sec(x)

解答

\int_{0}^{4} sec (x) d x

发散

求解步骤

\int_{0}^{4} sec (x) d x

取

sec (x)

的分母，令其等于零:

x = \frac{π}{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_{0}^{\frac{π}{2}} sec (x) d x + \int_{\frac{π}{2}}^{4} sec (x) d x

\int_{0}^{\frac{π}{2}} sec (x) d x =

发散

如果表达式有部分发散，则整个表达式发散

= 发散

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