Equivalent p→9←→(p→q)∧(q→p) pq qp (→9)A(g→P) p→9 p→g→(p→q)A(q→P) 0 0 1 1 1 1 1 What is the 01 1 0 0 0 1 10 0 1 0 0 1 DIFFERENCE 11 1 1 1 1 1 between Given two formula A and B,containing the set of variables S. A→B If for all possible assignments of all variable in S,the formula AB is true, and then A and B are EQUVALENT and denote as A=B A三B? P→9)=(p→q)A(9→p)Equivalent Given two formula 𝐴 and 𝐵，containing the set of variables 𝑆. If for all possible assignments of all variable in 𝑆, the formula 𝐴 ↔ 𝐵 is true, then 𝐴 and 𝐵 are EQUVALENT and denote as A≡B What is the DIFFERENCE between A↔ 𝑩 and 𝑨 ≡ 𝑩?