Mathematics
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    20lg85
    330.018-71.4085*e^(0.247/-0.739893)
    26.86095/((e^(0.247/-0.739893)-e^(0.79817/-0.739893))
    C(8,2)A(6,3)
    sin30+cos30
    ln10000
    ln(36)
    lg10+lne=
    (114514+114514)*(1*14+5-1+4)+(114514+(11451*4+(114*5*1*4+(1*(1+4)*5*1*4))))
    (1/3)/2-(1/3)
    (1/3)/20-(1/3)
    20-(1/3)
    20-1/3
    396+918 918-398
    2*8
    5^(1/4)*sin((1/4)(arctan(-4/3)+3.1415926535*1/2)
    5^(1/4)*sin((1/4)(arctan(-4/3)+3.1415926535*3/2))
    5^(1/4)*sin((1/4)(arctan(-4/3)+3.1415926535*2/2))
    5^(1/4)*cos((1/4)(arctan(-4/3)+3.1415926535*2/2))
    5^(1/4)*sin((1/4)(arctan(-4/3)+3.1415926535*1/2))

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