2^x≥x^2
    2*x≥x^2
    9X-3-4X+2≤1
    3x−6≤9
    2x-2<4x+12
    x+1≥x^2
    (e^x-e^(-x))/2＜0
    (e^x-e^(-x))/2≥0
    x/sqrt(1-x^2)≥0
    ln(x+sqrt(x^2+1))＜x
    ln(x+sqrt(x^2+1))＜0
    ln(x+sqrt(x^2+1))≥0
    sin(x)≥0
    asin(x)≥0
    x^(1/3)≥-1
    x^(1/3)≥1
    x≥x^3
    1/x≥1
    sin(x)＜x
    x^2≥x

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