1.曲线y=x+ln x在点(1,1)处的切线方程为:_____________2.设函数y=ln x,则它的弹性函数Ey/Ex =_____________
问题描述:
1.曲线y=x+ln x在点(1,1)处的切线方程为:
_____________
2.设函数y=ln x,则它的弹性函数Ey/Ex =_____________
答
1、2x-y-1=0
2、Ey/Ex =(dy/dx)*(x/y)=1/y