求导得:y`=3x^2-6x 则在点(1,-1)处的切线斜率k=y`(1)=-3 由点斜式得y-(-1)=(-3)(x-1) 整理得3x+y-2=0
曲线y=x^3-3x^2+2在点(1.-1)处得切线方程为?
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