[主观题]曲线y=x3—2x在点(1,-1)处的切线方程为 .
[主观题]曲线y=x2+1在点(1,2)处的切线方程为__________.
[单选题]曲线y=x3-5x+l在点(2,-l)处的切线方程为 ( )A.7x—Y一15—0B.7x-Y+15=0C.x+y-1=0D.z+y+1=0
[试题]曲线y=x+ln x在点(1,1)处的切线方程为________________.
[单选题]双曲线x2-y2/2 =1在点(-√2,√2)处的切线的方程是( ).(A)y=-x+√2.(B)y=-x+3√2.(C)y=-2x-√2.(D)y=-2x+3√2.
[问答题]曲线sin(xy)+ln(y-x)=x在点(0,1)处的切线方程是----------.
[问答题]函数y=f(x)是由方程xy+2lnx=y4所确定,则曲线y=f(x)在点(1,1)处的切线方程为----------.
[问答题]函数y=f(x)是由方程xy+2lnx=y4所确定,则曲线y=f(x)在点(1,1)处的切线方程为-----------.
[问答题]函数y=f(x)是由方程xy+2lnx=y4所确定,则曲线y=f(x)在点(1,1)处的切线方程为-------------.
[单选题]过点(1,-2)且切线斜率为2x+1的曲线方程y=y(x)应满足的关系是( ).A.y′=2x+1 B.y′′=2x+1 C.y′=2x+1,y(1)