Interval notation definition in math

Interval notation is a mathematical notation used to represent a range of values on the number line. It employs parentheses and brackets to indicate whether endpoints are included or excluded; for example, (a, b) denotes all numbers between a and b, excluding a and b, while [a, b] includes both endpoints. Additionally, a combination like [a, b) means a is included, but b is not. This notation provides a concise way to express intervals in various mathematical contexts.