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若曲线f(x)=x4-x在点P处的切线垂直于直线x+3y=0,则点P坐标为( )...
若曲线f(x)=x4-x在点P处的切线垂直于直线x+3y=0,则点P坐标为( )
A.(1,3)
B.(1,0)
C.(-1,3)
D.(-1,0)
考点分析:
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