Derivatives of composite functions How would I solve a problem that is asking me to find the derivative of $F$ when $$F(x)=f\left(\frac{x+2}{x+4}\right)$$ and $f$ is differentiable.
Not asking for the answer here obviously, just the steps needed to get off the ground.

You use the chain rule.
If $F(x) = f(g(x))$
then $F'(x) = g'(x)f'(g(x))$
