Posted by Amelia on .
differentiate using product, chain and quotient rule
ln x / 5x7
and
e^x / 2x^3  1
could you help me out with the first and just point me in the right direction for the first i cant seem to get the steps in the right order and then it gets all muddled
thank you
A!

maths 
bobpursley,
let u= e^x v=(5x7)
du/dx=e^x dv/dx= 5
f= uv^1
f'= u d(v^1)/dx+ v^1 du/dx
f'= uv^2 dv/dx + v^1 e^x
so...
f'=5e^x/(5x7)^2+ e^x/(5x7
check that.