x-4＜x
    x-4>x
    x-4>0
    2^-(9.7225-(x-26.12)<0.3
    2^-(9.7225-(x-23.52)<0.3
    2^-((x-23.52)-(33.55-26.12))<0.6
    2^-((x-23.52)-(33.55-26.12))<0.3
    2^-(9.7225-x)<0.3
    2^-(9.7225-(x-23.5975)<0.3
    2^(9.7225-(x-23.5975))>10/3
    2^(9.7225-x)>10/3
    2^(9.7225)>10/3
    m+1<=(m-1)^2
    1+m>=(m-1)^2
    －4940＋a－a×2%≥6000
    (2k+1)^2-4k^2>0
    2^x大于x^2
    2^x大于4×x^2
    2x大于4×x^2
    2x大于x^2

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