d(arctanx^2+e^2x+lnx+根号3)= 设函数y=x/lnx求y“=
问题描述：
d(arctanx^2+e^2x+lnx+根号3)= 设函数y=x/lnx求y“=
答
y=x/lnx,则一阶导数y'=1/ln(x)-1/(ln(x)^2,二阶导数y''=-1/[xln(x)]+2/[x(ln(x))^3]
d(arctanx^2+e^2x+lnx+根号3)= 设函数y=x/lnx求y“=
y=x/lnx,则一阶导数y'=1/ln(x)-1/(ln(x)^2,二阶导数y''=-1/[xln(x)]+2/[x(ln(x))^3]