(449.093-x)*(1085.6-667.79)-(x-428.093)*(1146.4-1085.6)>=0.02165*(1085.6-667.79)*(1146.4-1085.6)
    80+log（0.8，x-16）<=68
    (430-y)*(667.79-600)-(430-427.293)*(862-667.79)>=0.013*(667.79-600)*(862-667.79)
    (449.093-x)*(862-667.79)-(x-430)*(1146.4-862)>=0.0402*(862-677.79)*(1146.4-862)
    (449.093-x)*(1085.6-862)-(x-427)*(1146.4-1085.6)>=0.02165*(1146.4-1085.6)*(1085.6-862)
    (449.093-x)*(1085.6-667.79)-(x-429.593)*(1146.4-1085.6)>=0.02165*(1085.6-667.79)*(1146.4-1085.6)
    (449.093-x)*(1085.6-667.79)-(x-429.093)*(1146.4-1085.6)>=0.02165*(1085.6-667.79)*(1146.4-1085.6)
    (449.093-x)*(862-667.79)-(x-429.093)*(1146.4-862)>=0.02165*(862-677.79)*(1146.4-862)
    (449.093-x)*(862-667.79)-(x-428.5)*(1146.4-862)>=0.02165*(862-677.79)*(1146.4-862)
    (449.093-x)*(862-667.79)-(x-428)*(1146.4-862)>=0.02165*(862-677.79)*(1146.4-862)
    (449.093-x)*(1085.6-667.79)-(x-429.06)*(1146.4-1085.6)>=0.02165*(1085.6-667.79)*(1146.4-1085.6)
    (449.093-x)*(1085.6-862)-(x-431.632)*(1146.4-1085.6)>=0.02165*(1146.4-1085.6)*(1085.6-862)
    (449.093-x)*(1075.6-862)-(x-427)*(1146.4-1085.6)>=0.02165*(1146.4-1085.6)*(1075.6-862)
    1+x+x^2<1
    0.5*4.5x+0.4*(15-4.5x)/3<=5.2
    （x-2）（1-3x）＞2
    -10x²+210x-800≥280
    x＋2/x-5≤0
    2x-3/x-5≤0
    ln（2x+6）≥0

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