It takes the form latexleftxtextstatement about xrightlatex which is read as the set of all latexxlatex such that the statement about latexxlatex is true. A closed interval is one that includes its endpoints. Open and closed intervals.
A closed interval is one that includes its endpoints.
In interval notation this set of numbers would look like this. Lets go ahead and write the solution in both set notation and interval notation. A square bracket when we want to include the end value or. N1 is representing the First Number.