x(1 − x^2)^3 > 3(1 − x^2)^3
    x(1 − x^2)^3 > 3(1 − x2)^3
    x(1 − x2)3 > 3(1 − x2)3
    （3x-2）/（2x-3）<=1
    3x-6>0
    x>0=(-x*x+5*x)/5
    360y+324(100-y)≥3120
    -1≤x－x²≤1
    x－x²≤1
    x-1/x＞1
    x-1/x＞0
    sqrt(x-1)-sqrt(2x-1)>=sqrt(3x-2)
    14y+172-8.6y><199
    14y+172-8.6y<>199
    14y+172-8.6y>=199
    -1/3≤1/x≤3
    -3/1≤1/x≤3
     ( x -7) / ( x - 5 ) - ( x +5 ) / ( x + 4 ) ≥0
    -1/3≤1/x≤1/3
    (x+3)/(x-5)-(x-3)/(x+5)≤0

Home page << page403 page404 page405 page406 page407 ... ... page418page page419page page420page page421page page422page >> Last page 1275 pages in total