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UchihaMadara

UchihaMadara

Đăng ký: 10-12-2023
Offline Đăng nhập: 10-12-2024 - 20:50
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$\frac{2}{ab+a+3}+\frac{1}{2bc+b+2}+\frac{1}{ca+2c+2}\leq...

21-01-2024 - 22:40

a,b,c $\epsilon \Re , abc=1$. CMR

 

$\frac{2}{ab+a+3}+\frac{1}{2bc+b+2}+\frac{1}{ca+2c+2}\leq \frac{3}{5}$