a(24-2a)+(100-a)(35-30)≥468
    e（-4.647*308*x）<0.0001
    34a+40(100-a)≤3800
    lnx+2>0
    −e−xx+e−x>0
    3x^2+2x-1<0
    (2*x-1)^2<(x+1)^2
    (x-1)^2>(2*x-5)^2
    x^2-2*x-5<0
    x^1-2*x-4<1
    [ π×（x+1）] / 6 × sin ( ( x * π ) / 6 ) - π * x / 6 × sin ( ( ( x + 1 ) * π ) / 6 ) <0
    ( π / 6)× sin ( ( x * π ) / 6 ) - (π * x )/ 6 × sin ( ( ( x + 1 ) * π ) / 6 ) <0
    π/6×sin[(xπ)/6]-πx/6×sin{[(x+1)π]/6}<0
    64/9+8/3(-2+m)≥0
    (y+2)/3-(y+1)/2>1
    (y+3)/3-y/2>1
    2.021×(1.15+x)≥2.196×(1+x)
    2-2m<0
    （x-2）^2>1/x
    x^4+8*x^2-9<0

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