(2015,2,3)设函数<img src="https://static.zxtiku.com/wangke/imgs/topic/44aec89de6fa901ec281458bde06925f.jpg"/>连续,<img src="https://static.zxtiku.com/wangke/imgs/topic/442621d7d20afb798ae1667c4020c95e.jpg"/>若<img src="https://static.zxtiku.com/wangke/imgs/topic/4cb204b308b7bdfe99b14176d7caee47.jpg"/><img src="https://static.zxtiku.com/wangke/imgs/topic/66ef27773639ec91f792c1744483764d.jpg"/>则<img src="https://static.zxtiku.com/wangke/imgs/topic/798e7892e5fb8274b00a96679d3ce5d6.jpg"/>____