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LESSON
1: REAL NUMBERS & RADICALS
Note: In these notes, we are talking about real numbers unless otherwise stated.
Intervals:
The interval can also be illustrated on a number line as below.
NOTE: Open circles or round brackets indicate that the end point indicated is not included.
The interval can also be illustrated on a number line as below.
OR
NOTE: Closed circles or square brackets indicate that the end point indicated is included.