# Limits basics

Contents
Limits are intuitive, yet elusive. Learn what they are all about and how to find limits of functions from graphs or tables of values. Learn about the difference between one-sided and two-sided limits and how they relate to each other.
4 exercises available

### Limits introduction

A limit is the value that a function or sequence "approaches" as the input or index approaches some value. In this tutorial, we supply an intuitive understanding of limits.

### Limits from tables

Find limits by creating a table of values and analyzing the trend.

### One-sided limits

Learn what one-sided limits are and analyze them via graphs.

### One-sided vs. Two-sided limits

Investigate the relationship between a two-sided limit at a point and the one-sided limits at that point (spoiler: the two-sided limits exists if and only if the one-sided limits exist and are equal).

### Formal definition of limits (optional)

The epsilon-delta definition of a limit is not assessed on the AP Calculus AB or BC Exam. However, teachers may include this topic in the course if time permits.

### Review: Limits basics

Review your understanding of the basics of limits with some challenge problems.