e∧x≥ex
    -5*x+1>0
    （10＋x）/（3＋x）≧2
    （x＋10）/（x＋3）≧2
    x＋10÷x＋3≧2
    -lnx／x＾2＞0
    lnx／x＾2＞0
    20x+30（8-x）≥210
    20x+30（8-x）≥210 （90-20）x+(130-30)(8-x)≤770
    78x≥-30 50x≤-30
    2.78x/(x+1400)＞0.88
    2.78x/x+1400＞0.88
    2cos（x-6/π）-1＜0
    (k-1)^4-(k^2+1)×(k-1)×(k-3)≥0
    (4(k-1)^2)^2-4×(k^2+1)×(4×(k-1)×(k-3))≥0
    Cos x＜1
    6（2/3x+1）≥2x-5
    x＾2-7x+10>0
    -x^2+2x>0.648
    x＞5 3x^2＜e

Home page << page79 page80 page81 page82 page83 ... ... page94page page95page page96page page97page page98page >> Last page 1275 pages in total