### Overview

In this session we move from finding the area of an infinitely long region to finding the sum of infinitely many terms; Riemann sums form a bridge between these two topics. The most important infinite series is the geometric series, whose value is surprisingly easy to describe.

### Lecture Video and Notes

### Video Excerpts

Clip 1: Introduction to Inﬁnite Series

### Recitation Video

### Limit of a Series

### Worked Example

Summing the Geometric Series