问题详情:函数f(x)=x4-2x3+图象上点(1,-1)处的切线方程为( )A.4x+y-3=0 B.4x-y+3=0C.4x+y+3=0 D.x-4y-3=0【回答】A知识点:导数及其应用题型:选择题