What is the derivative of f(x)=xlnxf(x) = \frac{x}{\ln x}f(x)=lnxx?
(lnx−1)/(lnx)2(\ln x - 1) / (\ln x)^2(lnx−1)/(lnx)2
1/(1/x)1 / (1/x)1/(1/x)
lnx−1\ln x - 1lnx−1
None