Discrete mathematical problem, 1, principal disjunctive paradigm for finding propositional formula (P∨Q)→(R∨Q), principal conjunctive normal form. Who knows how to find it? Hope to teach
You can look it up in the truth table. According to the true value of formula A→B, it is false only when A is true and B is false, so it becomes false only when P∨Q is true and R∨Q is false (P∨Q)→(R∨Q), in which case P is true, Q is false and R is false, that is, the false assignment is only/.