x^－x+1≥0
    2k－1＞0
    x∧2－2x－4＞4
    3x/x*x-1<=1
    2x+5/(x^2+2x-35)≥ 0
    2x+5/x^2+2x-35≥ 0
    x^2(21 − 20x) ≤ 1
    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

Home page << page403 page404 page405 page406 page407 ... ... page418page page419page page420page page421page page422page >> Last page 1276 pages in total