MTH-100 Lecture : Inequalities 1
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< less than includes all real numbers below the number but not the number itself. Example: x < 3 read as x is less than 3 . Interval notation: ( ,3) use a parenthesis to show 3 is not included. Set builder notation: {x | x < 3} Less than or equal to includes all real numbers below the number and the number itself. Example: x 3 read as x is less than or equal to 3 . Interval notation: ( , 3] use a bracket to show 3 is included. Set builder notation: {x | x 3} > greater than includes all real numbers above the number but not the number itself. Great than or equal to includes all real numbers above the number and the number itself. Draw a graph using grouping symbol endpoint a < x < b x is between a and b, a is less than x and x is less than b .
