Question

Differentiate f(x)=ln(x2+6).

Answer 1

do you know the chain rule?

Answer 2

yes

Answer 3

so look at it like this:
\[d(ln(x^{2}+6))/dx\\\\=d (ln(something))/dx\\
=\frac{1}{something}*\frac{d(something)}{dx}\]