Given `f(x)=7/(7x+6)` :

Rewrite as `f(x)=7(7x+6)^(-1)`

Using the power rule and the chain rule we get:

`f'(x)=-7(7x+6)^(-2)(7)=(-49)/((7x+6)^2)`

Given `f(x)=7/(7x+6)` :

Rewrite as `f(x)=7(7x+6)^(-1)`

Using the power rule and the chain rule we get:

`f'(x)=-7(7x+6)^(-2)(7)=(-49)/((7x+6)^2)`