标题 | 日期 |
---|---|
若方程x sup2²+px+q=0的两... | 2011-09-01 |
{yㄧy=x&x1 sup2 x2 sup2;+1},{xㄧ... | 2011-09-07 |
若f(x)=x&4x sup2 45 31x;+bx+c,... | 2011-09-24 |
若二次函数y=mx&4x sup2 45 31x;+4x+... | 2011-09-25 |
求4x&4x sup2 45 31x;-4x+1〉0的解集 | 2011-09-30 |
求f(x)=x&4x sup2 45 31x;+2ax+1... | 2011-10-10 |