已知曲线<img src="http://jgxm-question.oss-cn-beijing.aliyuncs.com/psst/files/d3ae4a767b74465b8236d45fcceb3149.png?x-oss-process=image/sharpen,200"/>与x 轴相切,则<img src="http://jgxm-question.oss-cn-beijing.aliyuncs.com/psst/files/968c944a16ad429b8e4e6858a481b41c.png?x-oss-process=image/sharpen,200"/>可以通过<img src="http://jgxm-question.oss-cn-beijing.aliyuncs.com/psst/files/75d52f92b75a4415b426bcd7f78b9201.png?x-oss-process=image/sharpen,200"/> 表示为 <img src="http://jgxm-question.oss-cn-beijing.aliyuncs.com/psst/files/69a090fbc52340ec83a34bb86da027d0.png?x-oss-process=image/sharpen,200"/>