A、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/162062721372748c0f90346ad4d05a1b38e392578e36cimage15.png"style="width:106px;height:41px;"/>.
B、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1620627213763382a18df018b4141a4875b523cab9be3image16.png"style="width:118px;height:41px;"/>.
C、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/16206272137950ae18de3899145ba99511f565318763cimage17.png"style="width:105px;height:26px;"/>.
D、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1620627213830ab255107a4e3456e8acf9816cb78631fimage18.png"style="width:113px;height:26px;"/>.
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在点
处的切线方程为( ).