(x-1)(x+3)>0
    (x-1)/2 <= x/3
    2x+5<3(x+1)
    0.5^√2x-1>0.5^x-2
    abs(3x-2)>0
    2x-5sinx>0
    x^2-3x<＝4
    e^x-1/2x^2>1+x^e
    e^x-1/2x^2>ln（x-1）+x^e
    e^x-1/2x^2>ln（x-1）
    -x^2+4x>6-x
    x-1/x-2<=0 x-1/x>=0
    2-x/x-1<=0 x/x-1>=0
    cosx≥½
    (x-3)(x+2)>=0
    log(x,6)<0
    2/3＜2/X
    (2x-1)/(3-4x)>1
    (x+1)/(x-2)<=2
    (x+2)/(1-x)<0

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