X is greater than or equal to four. So the lowest value for the inequality is placed on the left side in each set of parentheses or brackets. Usually youll see it when you learn about solving inequalities because for some reason saying x 3 isnt good enough so instead theyll want you to phrase the answer as the solution set is x x is a real number and x 3.
Ii x x 4 i the set of all x such that x is a real number and x is greater than or equal to four.
This video introduces how to read and write interval and set notation. Notation plays an important role in mathematics. The inequality latexxylatex can also be written as latexy. Usually youll see it when you learn about solving inequalities because for some reason saying x 3 isnt good enough so instead theyll want you to phrase the answer as the solution set is x x is a real number and x 3.