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不,不是:~P -> Q === P v Q,它不等于 P ^ Q
~P -> Q === P v Q
P ^ Q
证明它的一种方法是使用真值表:
P | Q | P v Q | ~P | ~P -> Q 0 0 0 1 0 0 1 1 1 1 1 0 1 0 1 1 1 1 1 1 ^ ^ +-------------+ these are equivalent
No, it's not: ~P -> Q === P v Q, it is not equivalent to P ^ Q
One way to prove it is to use a truth table:
只需查看每个表达式的真值表:
p | q | p v q --+---+------ T | T | T T | F | T F | T | T F | F | F p | q | ~p -> q --+---+-------- T | T | T T | F | T F | T | T F | F | F
Just look at the truth tables for each expression:
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不,不是:
~P -> Q === P v Q
,它不等于P ^ Q
证明它的一种方法是使用真值表:
No, it's not:
~P -> Q === P v Q
, it is not equivalent toP ^ Q
One way to prove it is to use a truth table:
只需查看每个表达式的真值表:
Just look at the truth tables for each expression: