0.2+(0.81x/123)+(x-0.147)^2/550^2+（0.8x-0.168)/39=1
    0.2+(0.81x/123)+(x-0.147)^2/700^2+（0.8x-0.168)/39=1
    0.2+(0.81x/123)+(x-0.147)^2/400^2+（0.8x-0.168)/39=1
    0.2+(0.81x/123)+(x-0.147)^2/200^2+（0.8x-0.168)/39=1
    0.2+(0.81x/123)+(x-0.147)^2/545^2+（0.8x-0.168)/39=1
    0.74+(0.81x/123)+(x-0.147)^2/545^2+（0.8x-0.168)/39=1
    X/（1-X）=10%
    12=13（32％-x%）/x
    13*（32%-x％）=12x
    -x^3+x^2+3x-2=0
    185.002x+1.13215
    x+10%x＝40000
    b^2-2lnb+2 = e3
    b^2-2lnb+2=e2
    a^2-2ln a+1=e
    (30-x)(60+10x)=5280
    (30-x)(60+40x)=5280
    (30-x)(60+20x)=5280
    5/9x=5/8x-10
    5/9x=5/8x+10

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