设曲线y=y(x)上点P(0,4)处的切线垂直于直线x-2y+5=0,且该点满足微分方程y″+2y′+y=0,则此曲线方程为( )。A. B. C. D.
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曲线x2+y2=2x在点(1,1)处的切线方程为.
曲线y=lnx在点(1,0)处的切线方程为.
曲线y=sin(x+1)在点(-1,0)处的切线斜率为______.
曲线y=e2x-4x在点(0,1)处的切线方程是()A.2x-y-1=0 B.2x+y-1=0 C.2x-y+1=0 D.2x+y+1=0
曲线y=2x2在点(1,2)处的切线方程y=______.
曲线sin(xy)+ln(y-x)=x在点(0,1)处的切线方程是________.