x^-x > 0.1
    x^-x > 1.2
    x^x > 1.2
    x^x > 1
    x^x > 0.1
    cosx < 0
    cosx > 1
    cosx <0.5
    x^x < 0
    xsinx>5
    x^2-x<=0 2*x-1>0
    0>0.15*(n-1)-5sqrt(0.03*(n-1))>-20
    0>15*(n-1)-5sqrt(3*(n-1))>-20
    15*(n-1)-5sqrt(3*(n-1))>-20
    1000x-10x²-21000≥3910
    -10x²-1000x-2100≥3910
    36-3x/2≥36/x
    30-3x/2≥36
    -10x×x+1400x≥46750
    -7t＾2+6t+1>0

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