Exercise calculus.differentiation.quotient

Description
Use the quotient-rule to find the derivative of a polynomial. Only remove parentheses in the numerator.

Derivation

3*(D(x) x+D(x) 4)/(x+4)^2

⇒ calculus.differentiation.deriv-of-poly

3*(1+D(x) 4)/(x+4)^2

⇒ calculus.differentiation.deriv-of-poly

3/(x+4)^2