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hmh17062001
2 năm trước
1. Cho `a,d\ge 0; b,c>0`. Tính GTNN `P=b/(c+d)+c/(a+b)` 2. Cho `a,b,c\in [1; 2]`. Tính GTLN `P=(a+b+c)(1/a+1/b+1/c)`
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