3-2x＞1
    0.99<10000(1-e^(-60/(10001*x)))*x/60
    0.99<10000(1-e^(-t/(10001*x)))*x/60
    0.99<10000(1-e^(-t/(10001*x))*x/60
    0.99<(1000(1-e^(-60/(10001*x)))/60/x
    0.99<(1000(1-e^(-60/(10001*x)))/60/x
    8X²-22X+15＜0
    1/(x+1)<3
    1/(x+1)>2
    1/(x-1)<1
    1/(x-1)>0
    1/(x-1)<3
    1/(x-1)>2
    1/(x+1)<1
    1/（x+1）>0
    a^4-6a^2+9-32>0
    10000(1-e(-60/(10001*x)))>0.99*60*x
    -3<=(2*x-1)<=3
    -1<=(2*x-3)/3<=1
    3/4*n+(-1)^n<=3/2*n

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