1.The union of the solution sets of x+1=5, x+1<5, and x+1>5 is (-infinity, infinity).
2.The intersection of the sets {xlx>/7} and {xlx\<7} is no solution.
3.The union of the sets (-infinity,8) and (8, infinity) is {8}.
4. The intersection of the sets (-infinity, 8) and (8, infinity) is {8}.
5. The intersection of the set of rational numbers and the set of irrational numbers is {0}.
6.The union of the set of rational numbers and the set of irrational numbers is the set of real numbers.
2006-08-29
18:30:43
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2 answers
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asked by
Anonymous