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n. 0. ((a VB) A (a y)) (y VB) (a = (B=)) (8 + (a =)) Prove that each of the wffs in Question 2 is a theorem with a formal pro
(3 = (ه 3)) و (وہ 3ہ) (و د ) v (3 ج ) ((۸) + (۸ه)) د (0 = a) g . وہ ((3ہ a + ( B۸) نه نه نه نه


Just do the question (e) cho)


2. a. c. e. Prove that each of the following wffs is a tautology with the truth table. (la 1)^(B + y) = ((a VB) = 1) 6 BV BV
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e) (~B=JNa) (^B =) Nx) =) ( (MBFsx) = 8) B x Х O B NO o 1 0 B (BywalnB =)) B=>f\A=> 1 1 1 1 1 0 1 I 1 I 0 O 0 1 1 i final exp

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