1-4/X^2>0
    （x-1）*（x+2）<0
    x＾2－4x＜0
    0*x^2+2x+3<0
    2/3*x^2+2x+3<0
    1/3*x^2+2x+3<0
    1/3*x^2+2x+3<0
    (x^2+x-6)(x^2+5x+7)≥0
    h-22500/(4*h-641.6544)
    (22500/(4*h-641.6544)-h)^2<68101
    -22500/(4*h-641.6544)>259.5766553+h
    22500/(4*h-641.6544)>259.5766553+h
    22500/(4*h-641.6544)<260.961683+h
    sqrt(22500+((22500/(4*h-641.6544))-h)^2)-300.4>-0.6
    sqrt(22500+((22500/(4*h-641.6544))-h)^2)-300.4<0.6
    sqrt(22500+((22500/(4h-641.6544))-h)^2)-300.4<0.6
    sqrt(22500+((22500/(4h-641.6544))-h)^2-300.4)<0.6
    (300^2/4)^2-(((1+2*0.466)*300+3*h)*300^2/4)*8*(0.466*300+h)+((300+h)-(300+0.6)^2)*(4*(0.466*300+h)^2<0
    (300^2/4)/(4*(0.466*300+h)^2-(((1+2*0.466)*300+3*h)*300^2/4)/(2(0.466*300+h)+(300+h)^2-(300+0.6)^2<0
    (300+h)^2-(300+0.6)^2<0

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