MA100 Study Guide - Final Guide: Railways Act 1921, Polynomial Long Division, Quadratic Formula
Document Summary
When interval notation is used, we assume that the real numbers are being considered. [a, ) (a, ) a x b a < x b. [a, b] (a, b] a x < b a < x < b. The intersection of two intervals, represented by , consists of all values contained in both intervals. [2, 6] (3, 8) is equivalent to (3, 6]. The union of two intervals, represented by , consists of any value which is contained in either interval [or both]. This notation is often used, for instance, when stating domains of functions [see below]. An important thing to keep in mind when simplifying expressions or solving equations is that an equal sign is a very strong statement. It indicates that the function de ned by the expression on the left is identical with that de ned by the expression on the right.
