-4x^2＋8x＋4≥0
    (a+4)^2-16a>0
    （k-1）(k+31)>0
    (x-1)(x-2)(x-3)>1
    (x-1)(x-2)(x-3)>0
    (x-1)(x-2)(x+3)>0
    (x-1)(x-2)>0
    sin(x)>sin(80)
    －8x＾2＋57x－49≥5000
    －8x＾2＋57x－49≥48
    -11200+X-X*0.1*3/12≥100
    -11200+X-X*0.1*3/12>100
    -11200+X-X*0.1*3/12≧100
    (195*a^2+63*a+18)/(19*a^2+6*a+3)<(593*a^2+208*a+59)/(57*a^2+18*a+9)
    [1+(1-(1-a)^9 )*(195*a^2+63*a+18)/(19*a^2+6*a+3)]×8/9×10^6<[1+(1-(1-a)^6 )*(23a+10)/(3a+2)]×8/6×10^6
    (195*a^2+63*a+18)<(198.76*a^2+70*a+19.36)
    1/6*{1+[1-(1-a)^6]*(23*a+10)/(3*a+2)}<1/9*{1+[1-(1-a)^9]*(195*a^2+63*a+18)/(19*a^2+6*a+3)}
    1/6*{1+[1-(1-a)^6]*(23*a+10)/(3*a+2)}<1/10*{1+[1-(1-a)^10]*(186.89*a^2+54.23*a+12.8)/(17*a^2+5*a+2)}
    1/6*{1+[1-(1-a)^6]*(23*a+10)/(3*a+2)}>1/9*{1+[1-(1-a)^9]*(63*a+18+195*a^2)/(6*a+3+19*a^2)}
    1/6*{1+[1-(1-a)^6]*(23*a+10)/(3*a+2)}<1/9*{1+[1-(1-a)^9]*(63*a+18+195*a^2)/(6*a+3+19*a^2)}

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