(3^1/2)*cos(x)*sin(x) -sin(x)*sin(x)≦1
    -3x^2-2x+21＜0
    -3≤-m-1≤1
    -3≤-m-3≤1
    x^2≤-1
    5x-7≥x^2
    6x-x^2≥9
    6x-x^2≥9
    abs(x+1)＞abs(3-2x)
    abs(x+1)＞abs(3-2x)
    abs(x+1)＞abs(3-2x)
    1-(4-y)^2>=0
    x+(x^2-4)^1/2＞0
    10000/x+10000/(x+115*0.25)＜150
    20000/(x+115*0.6)＜100
    20000/(x+34.5)＜100
    20000/(x+115*0.3)＜100
    10000/x+10000/(x+115*0.3)＜150
    10000/x+10000/(x+115*0.3)+10000/(x+115*0.6)＜150
    10000/x+10000/(x+115*0.3)＜150

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