### Introduction

The key concept upon which Calculus is built is the notion of “limits.” This unit covers topics related to limits, infinitely many, or infinitely small values.

**Part A: L’Hospital’s Rule and Improper Integrals**

- Session 87: L’Hospital’s Rule
- Session 88: Examples of L’Hospital’s Rule
- Session 89: L’Hospital’s Rule and Rates of Growth
- Session 90: Advanced Examples of L’Hospital’s Rule
- Session 91: Improper Integrals
- Session 92: Integral Comparison
- Session 93: Indefinite Integrals and Singularities