(1.8-4.4(t^2))^2+((3*t)-0.8*t^2+1.2)^2<1
    (1.8+4.4(t^2))^2+((16*t/3)-0.8*t^2)^2<1
    -(-1-x)^2+x^2-3≤0
    -(2-x)^2+x^2-3≤0
    2m-1>m-1
    2m-1
    4^x-8>0
    9^2x+1>27^3-x
    92x+1>273-x
    y<0
    y<0>
    x^x>114514
    2<3
    sqrt(4x^2-4x+2)-sqrt(x^2+1)-x+1<0
    sqrt(4x^2-4x+2)-sqrt(x^2+1)
    cosx<0
    e3+x≥1
    x^3+x/x-2>3
    2x+3≥16
    (600x-15000-34000)/(15000+34000)≥0.2

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