函数<img src="http://jgxm-question.oss-cn-beijing.aliyuncs.com/psst/files/7aba7101a14b413eaacb7f55fcfcef9e.png?x-oss-process=image/sharpen,200"/>的图像如图所示, 则它的连续区间为<br/> <img src="http://jgxm-question.oss-cn-beijing.aliyuncs.com/psst/files/ecc0bb18a72046a9ba6a37ee3b49bfc6.png?x-oss-process=image/sharpen,200"/>