3-x-1>0
    3-2x+2<3x
    12-1/4（x-2)^2>x-2
    0.4^n<0.1
    t^2-4t-4<0
    24.4-21.6<21.6-a
    5x一8x＞一4十10
    0.5(x+9)>2x
    3（x+1）
    27-3X大于等于4X+6
    x-3＞4 6-x＜1
    x-3＞4
    6－x＜1
    （16/（0.5A-0.01））+(26/(0.5A-0.055))≤238
    （7.14/（0.5A-0.03））+(26/(0.5A-0.055))≤1600
    （7.14/（0.5A-0.03））+(16/(0.5A-0.01))≤472
    1.567742669129844-(0.5*sin(alpha)+0.4*cos(alpha))>=0.5
    sqrt{(1254/1.22x)^2+(1393/x)^2}<200
    (1254/1.22x)^2+(1393/x)^2<400000
    （782/1.22x）^2+(573/x)^2<25600

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