a) With domain of discourse as the real numbers, prove that the following statement is true: ∀x((x > 1) → (x^2 + 4 > x + 4)) (b) With domain of discourse as the real numbers, determine if the following statement is true or false and justify your answer: ∀x(x > 0 ∧ −x^2 < 0) (c) With domain of discourse as the real numbers, prove that the following statement is false: ∀x∃y(y^2 < x^2 −

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Please provide a proof for the following statements
(a) With domain of discourse as the real numbers, prove that the following statement
is true:
∀x((x > 1) → (x^2 + 4 > x + 4))

(b) With domain of discourse as the real numbers, determine if the following statement is true or false and justify your answer:
∀x(x > 0 ∧ −x^2 < 0)
(c) With domain of discourse as the real numbers, prove that the following statement
is false:
∀x∃y(y^2 < x^2 − 2)
(d) State whether or not P ≡ Q, when P is the proposition (p → q) → (q ∧ r) and Q
is the proposition p ∨ r. Prove the result.

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