violympic vòng 1 cần gắp<img src="http://diendan.hocmai.vn/images/eyeeasy/buttons/ChuaXN.png" border

M

minhhieupy2000

$\sqrt{1+2x-x^2} \ge 0$
$A_{min}=0$\Leftrightarrow $x^2-2x-1=0$ \Rightarrow giải pt bậc 2
 
You must log in or register to reply here.
Top Bottom