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how to write set notation for all real numbers. You can write that set either in set theory notation as x R x 0 or in interval notation as 0 0. In mathematics the set of positive real numbers is the subset of those real numbers that are greater than zero.
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We can write the domain of fx in set builder notation as x x 0. X x 2 and x 6 Start with all Real Numbers then limit them between 2 and 6 inclusive. A A C 7.
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Using brackets is not recommended. Is the set containing the four numbers 3 7 15 and 31 and nothing else. Interval notation is a way of describing sets that include all real numbers between a lower limit that may or may not be included and an upper limit that may or may not be included. Notice that braces are used to indicate a set.
