## avendanl 3 years ago This one is not that obvious to differentiate. Help please? f(u)=lnu / 1 + ln2u

1. anonymous

quotient rule for this one

2. anonymous

$\left(fg\right)'=\frac{gf'-fg'}{g^2}$ with $f(x)=\ln(x), f'(x)=\frac{1}{x},g(x)=1+\ln(2x),g,(x)=\frac{1}{x}$

3. avendanl

Im an idiot.... Over thinking as usual...Thank you satellite73!!

4. anonymous

yw lots of ugly algebra i imagine