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discrete_mathematics_test_bank
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In 76–77, express the negation of the statement in terms of quantifiers without using the negation symbol. 76. ∀x((x > −1) ∨ (x < 1)) 77. ∃x(3 < x ≤ 7) In 78–79 P (x, y) means “x and y are real numbers such that x + 2y = 5 .” Determine whether the statement is true...
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