曲线的一条切线平行于直线,则切点的坐标为 A.(0,-2)或(1,0)   

曲线的一条切线平行于直线,则切点的坐标为

A.(0,-2)或(1,0)                                         B.(1,0)或(-1,-4)

C.(-1,-4)或(0,-2)                                  D.(1,0)或(2,8)

答案

B


解析:

,得,由已知得,解之得.当时,;当时,.∴切点的坐标为(1,0)或(-1,-4),

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