7. Prove F (Vx)(A → B) → (3x)A → (3x)B. 8. Prove E (¥x)(A → (B = C)) → ((¥x)(A → B) = (¥x)(A → C)).
7. Prove F (Vx)(A → B) → (3x)A → (3x)B. 8. Prove E (¥x)(A → (B = C)) → ((¥x)(A → B) = (¥x)(A → C)).
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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I need question 8
Transcribed Image Text:7. Prove F (Vx)(A → B) → (3x)A → (3x)B.
8. Prove F (Vx)(A → (B = C)) → (vx)(A –→ B) = (¥x)(A → C)).
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