# Problems with the derivative

1. Dec 8, 2006

i would need some help to find the derivative of:

$$y=log_{x} (x)$$ respect to x.. the log is itself in base "x"... to make the problem harder.

2. Dec 8, 2006

Hint: $$\log_{b}x = \frac{\ln x}{\ln b}$$.

Note that I changed the name of the base to b, rather than x.

3. Dec 8, 2006

### mathman

logx(x)=1. Therefore the derivative=0.