8a^4+4a^2＞0
    x3+3x2－9x－27=0
    8/(4x^2)-x/(16x^4)>0
    8/(4x^2)-x/(16x^4)<0
    [(2x-5)(x+1)]/[(x+3)(x-2)]>3
    (x+3)/(x^3+x^2-16x+20)<0
    [(x-1)(x+2)]/(2x+5)>0
    e(-3.14x/sqrt（1-x^2）)≤0.3
    x－（1.2x×0.8－200） = 440
    (21+d)(21+4d)<(21+11d)
    1+x/1-X大于0
    1+x/1-x＜0
    2/X-1＜0
    -2/X＞0
    1/x＞1
    1/X＜0
    1-1/x大于0
    -1/X＜1
    2-x＜0
    2-1/x＞0

Home page << page1123 page1124 page1125 page1126 page1127 ... ... page1138page page1139page page1140page page1141page page1142page >> Last page 1275 pages in total