absx＜0
    sqrtx＜0
    asin(lnx)＞0
    log(x,x+1)＞2
    sqrtlgx＞2
    sqrtlgx＞3
    122*x+200-20*(22-x)-10*x>1500
    122*x+200-20*(22-x)-10*x>2000
    122*x+200-20*(22-x)-10*x>1000
     ( x - 4 ) ^ 2 > 0
    (x-4)^2>=0
    x^2+16>=8x
    （117*7+39*x）/(117*39)<0.37
    （117*7+39*x）/(117*39)<0.47
    （117*7+39*x）/(117*39)<0.22
    （117*7+39*x）/(117*39)<0.17
    7－3x＜4
    -3x2 +6x+5<2(x-5)
    9+11/2a>0
    x2-4x-4＜0

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