(x+1)÷(1-x)>0
    （1/2）^x<2
    (1+x)^4 >1.004^12
    1<2^x<2
    0.5a^2<1
    49x²+9600x-36000>0
    1-2a^3-3a^2>0
    (20-x)/2*x≥42
    1+2a^3-3a^2>0
    1-2*lnx>0
    2^2n+n^2>1002
    4^-x+3≤1/16
    （1+x）^4>(1+0.4%)^12
     n(n-1)/2 >= 100
    2060/(220+60x)<5
    2060/(660 + 180x)<5
    740/(660+180x) < 5
    x2-6x-7<=0
    2a²≤5sqrt(a²-1)
    2a²≤5(√a²-1)

Home page << page320 page321 page322 page323 page324 ... ... page335page page336page page337page page338page page339page >> Last page 1276 pages in total