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Exercise 1.3 · Q77

Q.If A={3,5,7,9,11,12}A = \{3, 5, 7, 9, 11, 12\}, determine the truth value of: ∀x∈A\forall x \in A, 2x+9>142x + 9 > 14

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Solving 2x+9>142x+9>14 gives 2x>52x>5, i.e. x>2.5x>2.5. Every element of A={3,5,7,9,11,12}A=\{3,5,7,9,11,12\} is greater than 2.5, so the inequality holds for all of them. Since the property ho …

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