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dangquochoi

dangquochoi

Member Since 28-07-2011
Offline Last Active 26-10-2022 - 16:21

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In Topic: Chứng minh rằng $\sum \left ( a+\frac{1}{a...

23-04-2015 - 17:05

$a^2+b^2+c^2\geq \frac{(a+b+c)^2}{3}=\frac{1}{3}$

Bạn giải thích thêm chỗ này..chưa hiểu lắm.

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