# Calculus: Chain Rule – #28808

Question: Differentiate the following functions:

(a) $$f\left( x \right)={{x}^{2}}{{\left( 2x+3 \right)}^{5}}$$

(b) $$f\left( x \right)=\frac{1}{{{\left( 4{{x}^{2}}-7 \right)}^{2}}}$$