设 (x)在[a,b]上连续,在(a,b)内可导,且 (a)= (b),则(  )。

作者: tihaiku 人气: - 评论: 0
问题 设 (x)在[a,b]上连续,在(a,b)内可导,且 (a)= (b),则(  )。
选项
答案 D
解析 闭区间上连续函数必有最大值与最小值,而不是开区间,故排除A、B、C项;由罗尔中值定理可知D项正确。

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