# Chapter 12: Applications of Differentiation: Direct Use of Linear Approximation

##

## Introduction

We consider using the linear approximation as an approximation method, and
using it by iteration to determine inverse functions to the accuracy of your
machine.

## Topics

12.1 Estimating a Function Value Using the Linear
Approximation

12.2 Determining an Inverse Function Accurately by
Iterating the Linear Approximation

12.3 Spreadsheet Implementation of this Procedure