命题 真值
p 0 0 0 0 1 1 1 1
q 0 0 1 1 0 0 1 1
r 0 1 0 1 0 1 0 1
┑p 1 1 1 1 0 0 0 0
q∨r 0 1 1 1 0 1 1 1
┑p∧(q∨r) 0 1 1 1 0 0 0 0