Using ONLY THE BASIC PROOF RULES (i.e. Conj, Simp, Add, DS, MP, CP, DN, Contr, and IP) Prove that: $[¬A ∧ (¬A → B) ∧ ((¬A ∧ B) → (B ∧ C ∧ D))] → [A ∨ (B ∧ C)]$ Be careful with your indentation!
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Step 1: Let the given statement be $P = [¬A ∧ (¬A → B) ∧ ((¬A ∧ B) → (B ∧ C ∧ D))] → [A ∨ (B ∧ C)]$ We need to prove this using basic proof rules. Show more…
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