# What is the derivative of f(x)=log (x/5) ?

##### 1 Answer
Sep 16, 2015

$\frac{1}{x}$

#### Explanation:

derrivative of $\log \left(\frac{x}{5}\right)$ = $\frac{1}{\frac{x}{5}}$*$\frac{1}{5}$
which on simplification leads to $\frac{1}{x}$