2^x>10^5
    1/(1+x^(1/8))
    lnx/x^(1/2)<0.00001
    lnx/x^(1/2)<-ex
    x+（18÷x）＜9
    33x+2213+22>2341<4445
    32>31
    0>3
    23x>23x
    223x>4462
    sinx/(cosx)^2+sinx-2x>0
    e^(-3.1415926*c/(1-c^2)^0.5)<0.043
    (5x－x^2)/4＞0
    x^2-x+3<0
    (7/8)^x＞0.5
    (1/8)^x＞0.5
    1-(1/2)x^(1/4)+(1/200000000000000000000000000)x^(1/2)>0
    1-(1/2)x^(1/4)+(1/2)x^(1/2)>0
    1-(1/2)x^(1/4)+x^(1/2)>0
    e(-lnx/2)≤lnx/x^(1/2)

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