(x+2)/(x^2-5x-6)≥0
    -a/2≤a
    9.92x^3-98.25x^2+216.15x-81.48≥0
    9.92x^3-98.25x^2+216.15x-40.74≥0
    9.9x^3-98.31x^2+216.81x-40.77≥0
    9.9X^3+3≥0
    9.9x+3≥0
    2x+1<4-x 2x+1>x-4
    (x^2-2x-2)/(x^2+x+1）小于2
    2x+1<4-x 2x+1>x-4
    abs(x-1)<1
    x²-8x+12<0
    3/（x-2）小于等于1
    x+2>23
    tanx＞－π/9
    ( x+1)(x+6)<0
    x^3-4x-3≥0
    x^3-4x-4≤0
    16a²+40a+25>17/4
    sqrt(x^2-1)>sqrt(2x^2+4x)

Home page << page168 page169 page170 page171 page172 ... ... page183page page184page page185page page186page page187page >> Last page 1276 pages in total