information:classification
In calculus, the quotient rule is a method of finding the derivative of a function that is the ratio of two differentiable functions. Let h (x) = f (x) g (x) {\displaystyle h(x)={\frac {f(x)}{g(x)}}}, where both f and g are differentiable and g (x) ≠ 0. {\displaystyle g(x)\neq 0.} The quotient rule states that the derivative of h (x) is

It is provable in many ways by using other derivative rules.