总述：本次共解1题。其中
           ☆算术计算1题

〖1/1算式〗
    作业：求算式 2/3*(29.099*ln(400/350)-8.314*ln(2/3*0.4965/0.5066))+1/3*(29.099*ln(400/500)-8.314*ln(1/3)) 的值.
    题型：数学计算
    解:
          2/3*(29.099*ln(400/350)-8.314*ln(2/3*0.4965/0.5066))+1/3*(29.099*ln(400/500)-8.314*ln(1/3))
        =2/3*(29.099*ln1.142857-8.314*ln(2/3*0.4965/0.5066))+1/3*(29.099*ln(400/500)-8.314*ln(1/3))
        =2/3*(29.099*ln1.142857-8.314*ln0.653375)+1/3*(29.099*ln(400/500)-8.314*ln(1/3))
        =2/3*7.424091+1/3*(29.099*ln(400/500)-8.314*ln(1/3))
        =2/3*7.424091+1/3*(29.099*ln0.8-8.314*ln(1/3))
        =2/3*7.424091+1/3*(29.099*ln0.8-8.314*ln0.333333)
        =2/3*7.424091+1/3*2.640601
        =0.666667*7.424091+1/3*2.640601
        =4.949396+1/3*2.640601
        =4.949396+0.333333*2.640601
        =4.949396+0.880199
        =5.829595
    答案:2/3*(29.099*ln(400/350)-8.314*ln(2/3*0.4965/0.5066))+1/3*(29.099*ln(400/500)-8.314*ln(1/3))=5.829595

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