### Overview

The differential dy represents an infinitely small change in the value of y. The derivative dy/dx can be thought of as a ratio of differentials. Using differentials will make our calculations simpler; here we see how they can be used to compute linear approximations.

### Lecture Video and Notes

#### Video Excerpts

Clip 1: Introduction to Differentials

### Recitation Video

#### Computing Differentials

### Lecture Video and Notes

#### Video Excerpts

Clip 1: Differentials and Linear Approximation

### Recitation Video

#### Linear Approximation with Differentials

### Worked Example

Population Dynamics