（4m－2）∧2－4（m＋6）（m＋1）≥0
    2x-x＾2＋3＞0
    2x-x＾2-3＞0
    4<(1+2*T)/(2*T-2) (1-t)16+(1+2*t)4-(1+t) <= 0 (1-t)4+(1+2*t)2-(1+t) >0
    4>(1+2*T)/(2*T-2)>2 (1-t)16+(1+2*t)4-(1+t) >= 0 (1-t)4+(1+2*t)2-(1+t) >0
    t<1 t>5/2 (1-t)4+(1+2*t)2-(1+t)<0 (1-t)16+(1+2*t)4-(1+t)>=0
    t<1 t>5/2
    2>(1+2*T)/(2*T-2)
    -5x2-5x+24＞0
    lg0.9^t
    lg0.9^t<2
    (18*x-36)/(x^4+4*x^3+6*x^2+4*x+1)>0
     -(9*x-9)/(x^3+3*x^2+3*x+1)>0
    1
    0<3－x<7
    (x-1)／(x+1)＜0
    sqrt(9)*x<3
    sqrt(x)<4
    0.0054*x^2+0.06*x<5.03
    0.0054*x^2+0.06*x*sqrt(3.27*x^2)<5.03

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