1. Solve the differential equation y"+3y= sec(√3t).

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Q: 1. Using the laws of logical equivalence show: (c) Vx ≤ U. (P(x) → ¬Q(x)) = ¬3x = U. (P(x) ^ Q(x)) ·

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Q: Ex 2. prove: - a ≤a for every real number a .

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A: I have given the answer in the next step. Hope you understand that

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