（40511+a）÷17＞（60784+a）÷26
    0.09ln(x)≤ln(2*x)
    0.09ln(x)≥ln(2*x)
    0.9ln(x)≥ln(2*x)
    0.9ln(2*x)≥ln(x)
    0.9ln(2*x)≤ln(x)
    (x+2)(x+3)>0
    (x+2)(x+3)>=0
    （x-2）（x+3）>=0
    (x+2)(x-3)>=0
    x+2>=0
    x-2>=0
    x-2>0
    -x^2+10x+11＜=0
    -x^2+10x+11＞0
    -x^2+4x+21＞0
    x^2+2x-3＞0
    2x^2-3x-2>0
    2x-3x-2>0
    2x2-3x-2>0

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