• 2022-06-03
    要求证明两个复合命题是逻辑等价的。证明[tex=6.571x1.357]+J6j9W5zDTufTNhold5GDVohm4AE9HQeaJSK7C2vCTWMyH1Igs5InLy+o8QnAHtU[/tex]和[tex=4.357x1.357]0Ais5Y7hSfG3tcfX7mSTPBart09Hwfr9Yye+kLNuL8E=[/tex]逻辑等价