x^2+2x+1>x^2
    e^x*sinx
    x+ln(1-x/2)>0
    2X1+5X2≤1200 4X1+2X2≤800
    4X1+2X2≤800
    2X1+5X2≤1200
    1/2x>-2
    T<3
    10*x+15*(45-x)<=560 20*x+15*(45-x)>=548
    x∧2-1＞x
    x∧2-1＞x
    x∧3-1＞x
    x-1＞x
    x-1＞2
    （x+3）（x-5）＞0
    （x+3）（x-5）＞0
    10000*0.12+X*0.017+X*1.9-10000-x>0
    3.6+0.32a>=3.6(1 20%）
    abs(5x^2+7x-6)<12
    5x^2+7x-6<12

Home page << page243 page244 page245 page246 page247 ... ... page258page page259page page260page page261page page262page >> Last page 1275 pages in total