chứng minh

N

nguyenbahiep1

[laTEX]x^2-2.\frac{1}{2}x + \frac{1}{4} + \frac{3}{4} = (x - \frac{1}{2})^2 + \frac{3}{4} > 0 \forall x \in R[/laTEX]
 
You must log in or register to reply here.
Top Bottom