### Overview

When using linear approximation, we replace the formula describing a curve by the formula of a straight line. This makes calculation and estimation much easier.

### Lecture Video and Notes

#### Video Excerpts

Clip 1: Curves are Hard, Lines are Easy

Clip 2: Linear Approximation of a Complicated Exponential

Clip 3: Question: Can We Use the Original Formula?

### Worked Example

Product of Linear Approximations

### Lecture Video and Notes

#### Video Excerpts

Clip 1: GPS Time Dilation Example