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曲线y=-x3+3x2在点(1,2)处的切线方程为                              ...

曲线y=-x3+3x2在点(1,2)处的切线方程为                              ...

2021-05-28
问题详情:曲线y=-x3+3x2在点(1,2)处的切线方程为                                                                 (   )    A.y=3x-1   ...