36*x*x+9*100000000-36*10000*x>64x
    x^2-30+9＞1
    80+log（0.8，x-16）<=68
    (X-X*0.6*0.203-5000)*0.07>1000
    (X - X*0.6*0.203 - 5000) * 0.07 > 1000
    (x - x*0.6*0.203 - 5000) * 0.07 > 1000
    (X - X*0.6*0.203 - 5000) * 0.07 > 1000
    ((-x^2+3x-4)÷(2x)+x)((-x^2+3x-4)÷(2x)-x) <0
    ((-x^2+3x-4)÷(2x)+x)((-x^2+3x-4)÷(2x)-x)<0
    ((-x^2+3x-4)÷2x+x)((-x^2+3x-4)÷2x-x)<0
    sqrt（60h-h^2）＜39.56
    sqrt（60h-h^2）＞39.56
    60*h-h^2＞1565
    2π/w*3/4>7π/10 2π/w*5/4<17π/10
    2π/w*3π/4>7π/10 2π/w*5π/4<17π/10
    2π*3π/4>7π/10 2π/w*5π/4<17π/10
    π/w>7π/10 2π/w<17π/10
    π/w>7π/10
    -0.15x＞-50
    -1.85x＞-50

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