Find the interval(s) where the function is increasing and the interval(s) where it is decreasing

Question

Find the interval(s) where the function is increasing and the interval(s) where it is decreasing. (Enter your answers using interval notation. If the answer cannot be expressed as an interval, enter EMPTY or ∅.)

h(x)=x^2/x-4

increasing =

decreasing =

Answer 1

A function is increasing where the first derivative is positive and decreasing where it is negative.