a×0.6=27.9
    a×0.6=20.6
    a×0.6=12.6
    a×0.6=11.6
    a×0.6=9.9
    21×0.6-b=9.9
    21×0.6+b=9.9
    21×0.6×b=9.9
     (x^2*ln((0.5*3.85478^-05)/(x*1.2^-2)))/((1-x)^2*ln(((1-0.5)*3.85478^-05)/((1-x)*2.25^-4)))-1 = 0
     (x^2*ln((0.2*3.98107^-05)/(x*1.2^-2)))/((1-x)^2*ln(((1-0.2)*3.98107^-05)/((1-x)*2.25^-4)))-1 = 0
     (x^2*ln((0.14*3.46737^-05)/(x*1.2^-2)))/((1-x)^2*ln(((1-0.14)*3.46737^-05)/((1-x)*2.25^-4)))-1 = 0
     (x^2*ln((0.2*6.76083^-05)/(x*1.2^-2)))/((1-x)^2*ln(((1-0.2)*6.76083^-05)/((1-x)*9^-3)))-1 = 0
     (x^2*ln((0.5*6.16595^-05)/(x*1.2^-2)))/((1-x)^2*ln(((1-0.5)*6.16595^-05)/((1-x)*9^-3)))-1 = 0
     (x^2*ln((0.2*6.45654^-05)/(x*1.2^-2)))/((1-x)^2*ln(((1-0.2)*6.45654^-05)/((1-x)*9^-3)))-1 = 0
     (x^2*ln((0.14*6.16595^-05)/(x*1.2^-2)))/((1-x)^2*ln(((1-0.14)*6.16595^-05)/((1-x)*9^-3)))-1 = 0
     (x^2*ln((0.14*6.45654^-05)/(x*1.2^-2)))/((1-x)^2*ln(((1-0.14)*6.45654^-05)/((1-x)*9^-3)))-1 = 0
     (x^2*ln((0.14*6.76083^-05)/(x*1.2^-2)))/((1-x)^2*ln(((1-0.14)*6.76083^-05)/((1-x)*9^-3)))-1 = 0
     (x^2*ln((0.14*9.33254^-05)/(x*1.2^-2)))/((1-x)^2*ln(((1-0.14)*9.33254^-05)/((1-x)*8^-3)))-1 = 0
    (x^2*ln((0.2*8.12831^-05)/(x*1.2^-2)))/((1-x)^2*ln(((1-0.2)*8.12831^-05)/((1-x)*8^-3)))-1
    (x^2*ln((0.5*3.80189^-5)/(x*1.2^-2)))/((1-x)^2*ln((0.5*3.80189^-05)/((1-x)*8^-3)))=1

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