曲线y=x4-3在点(1,-2)处的切线方程为()A.2x-y-6=0 B.4

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问题 曲线y=x4-3在点(1,-2)处的切线方程为()A.2x-y-6=0B.4x-y-6=0C.4x-y-2=0D.2x-y-4=0

选项 A.2x-y-6=0
B.4x-y-6=0
C.4x-y-2=0
D.2x-y-4=0

答案 B

解析 【考情点拨】本题考查了曲线上一点处的切线方程的知识点.
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