Mathematics
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    —2x—3大于等于1
    141000000*(0.35x-X^2)>3000
    3500*6/(x^3-0.5x^2+0.135x-0.0105)<288000000
    141000000>3000/(0.35x-X^2)
    cos2x≥1
    5x+3(2x-10)≤320
    (2x+1)/3-1<(x-1)/2 3x-4≤6x-2
    (2x+1)/3-1<(x-1)/2
    9x-4≤6x-2
    (450-50)y+50×0.4y≥(12000+30000)×(1+0.25)
    -8<-8/x<-4
    abs(1/(sqrt((1 - x^2)^2+(2*0.707*x)^2))-1)<0.01
    5/x+1<x
    20m+190-20m/15≥190
    —4n<—17
    17—4n<0
    x-x^2+2<0
    1000000*(1+x)^30 > 5615.31*(1-(1+x/12)^359)/(-x/12)
    1000000*x^360-5615.31*(x^360-x)/(x-1)>0
    (x-1)(x+5) >0

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