已知函数<img src="http://jgxm-question.oss-cn-beijing.aliyuncs.com/psst/files/4548602d01444224b31c69133d6dcf79.png?x-oss-process=image/sharpen,200"/>在<img src="http://jgxm-question.oss-cn-beijing.aliyuncs.com/psst/files/725eb7cef81042bf9f32f9d438f2c7d2.png?x-oss-process=image/sharpen,200"/>上连续，在<img src="http://jgxm-question.oss-cn-beijing.aliyuncs.com/psst/files/aee4a432a2cd4b00b0fb81eafd265a1f.png?x-oss-process=image/sharpen,200"/>内可导，且<img src="http://jgxm-question.oss-cn-beijing.aliyuncs.com/psst/files/c208da7f364e43a7a4ac016918ba6482.png?x-oss-process=image/sharpen,200"/>，则（）.