# Quotient rule

In calculus, the quotient rule is a method of finding the derivative of a function that is the ratio of two differentiable functions.[1][2][3] Let ${\displaystyle f(x)=g(x)/h(x),}$ where both g and h are differentiable and ${\displaystyle h(x)\neq 0.}$ The quotient rule states that the derivative of f(x) is

${\displaystyle f'(x)={\frac {g'(x)h(x)-g(x)h'(x)}{h(x)^{2}}}.}$