# inverse of a function: the Calculators secret weapon

## Introduction

Introduction: It’s that time of year again, and that means the holidays are upon us. If you’re like most people, you probably have a pile of gifts under the tree and a backlog of tasks to take on. In addition to all of this, you may be feeling overwhelmed by the prospect of finding enough time to do all of it. What if there was a way to divide your holiday gift giving into manageable chunks? That would be the power of inverseofa function!

## Inverse Functions.

An inverse function is a function that takes the value of one variable and produces another variable that’s opposite. For example, the function “x = y” is an inverse function because it takes the value “y = -x”.How to calculate an Inverse FunctionYou can use the equation of line to find the inverse of a function, or you can use the reciprocal property ( Exponents) to find it. To find the inverse of a given function, divide its input by its output:Inverse f(x) = -f(x-1).The reverse is also true:Inverse f(x) = f(x-1).How to inverse a functionTo invert a function, simply change its sign! To invertebrate a function, take its argument and make it negative:Inverse f(x) = -f(-x).

## How to Use an Inverse Function.

To inverse an expression, use the following steps:1. Find the originalexpression and reverse it.2. Call the inverse function to get the result you want.3. Change the originalexpression into an inverse expression.

## How to use an Inverse Function.

To change an expression into an inverse function, first find the original expression and then use a math function to solve for the inverse. For example, to change x = –5 to x = 5x –10:x = 5x –10This exercise is solved in terms of y. To get the inverse of this equation, we would need to use the power function or another handy math tool to solve for y in terms of x.