abs(cosx-1+1/2x^2-1/24x^4)<1/999
    abs(sinx-x+1/6x^3-1/120x^5)<1/9999
    abs(ln(1+x)-x+1/2x^2-1/3x^3)<1/99
    abs(ex-1-x-1/2x^2-1/6x^3)<1/99
    X（x+2）>x（3-x）+1
    X²+6x+10>0
    4x^2-20x+43＞0
    （3x+1）^2/3＜（x-1）^2/3
    （3x+1）/(2-x)<=4
    （3x+1）/2-x<=4
    -50+X-（X+100)*1%≥10
    30-2x≤18
    e＾x-㏑x-2>0
    sin(sin(x))>0.1
    sin(sin(x))>0.9
    sin(sin(x))>0
    sin(x)>0
    tan(x)>1000
    sin(x)>2
    sqrt(0*x)>=0

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