3.47*e^(6.7%*h)> 5.00*e^(0.5%*h)
    3.47*e^(6.7%*h)>18.32*e^(5.2%*h)
    18.32*e^(5.2%*h)>25.04*e^(1.5%*h)
    2x²＋x＋3＜0
    9≤x²
    －9x²＋6x－1≥0
    (2k-3)/(4-k) <0
    (2k-3)/(4-k)>=-1
    a+1/a<0
    a+1/a>0
    3(2k+5)/2＜5k-1
    X/2-3x＞10
    -9x²＋6x-1≥0
    -9x²＋6x＋1≥0
    4x²＋12x＋9＞0
    -4x≥x²
    -x²＋x＋42＜0
    x²＋x-30≤0
    2x²-5x-3＜0
    √(R^2-468.72)+16-（√(R^2-240.25)）≥37.5-26.846

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