1-x/2+x≥1
    (1-0.187e(-1.923x))/(1-0.187e(-2.1153x))>0.9
    x^2-x<0
    (1-0.187e(-1.923x))/(1-0.187e(-2.1153x))<1.01
    ln(1644.753x+1)/ln(1495.23x+1)<1.01
    ln(205.7506x+1)/ln(187.046x+1)<1.01
    ln(205.7506x+1)/ln(187.046x+1)<0.01
    -1≤（-3x+4）/5
    205.7506x+1<(187.046x+1)^1.01
    205.7506x+1<(187.046x+1)^1.1
    -2≤1÷(x-1)≤3
    1÷(3-2x)≤1÷2
    1÷(1-2x)≤1÷2x
    1÷(2x-1)≥2
    1÷1-2x≤1÷2x
    3x^2-5x+2≥0
    2x^2-4x+10≤0
    abs(2x-1)≤-5
    abs(3x-2)≥4
    abs3x-2≥4

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