Graph of the Cube Root Function $y = \sqrt[3]{x}$

$y = \sqrt[3]{x}$ is the number whose cube is $x$. Unlike $\sqrt{x}$ it is defined for negative numbers too, so its domain and range are all real numbers.

It is the inverse of $y = x^3$ and an odd function with point symmetry about the origin. At the origin its tangent is vertical, so the curve rises steeply there.