# Does a Cubic Function Have an Inverse?

August 16, 2022

We say that the cube root function is the inverse of the cube function. The square function is not uniquely invertible, so it has no inverse function.

## Does every polynomial have an inverse?

While it is not possible to find an inverse of most polynomial functions, some basic polynomials have inverses. Such functions are called invertible functions, and we use the notation f−1(x).

## What is the opposite of a cubed number?

Finding the square root of a number is the opposite of cubing a number.

## Is a cubic function a one to one function?

This is the parent function of the cubic family of functions. Each x-value has a unique y-value that is not used by any other x-element. Since this is the definition of a one-to-one function, this function is one-to-one.

## Do linear functions have inverses?

The inverse of a linear function is much easier to find compared to other types of functions like quadratic and rational functions. This is because the domain and range of a linear function naturally includes all real numbers unless the domain is restricted.