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In: Advanced Math

1. Prove ├(∀x)A ∨ (∀x)B → (∀x)(A ∨ B). 2. Use the ∃ elimination technique —and...

1. Prove ├(∀x)A ∨ (∀x)B → (∀x)(A ∨ B).

2. Use the ∃ elimination technique —and ping-pong if/where needed— to show ├(∃x)A → (∃x)(B → A).

Appreciate you.

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