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quocthevl
2 năm trước
Bài 1: Cho x,y,z>0 thỏa mãn: 0<x;y;z ≤1 và x+y+z=2 Tìm MinP= $\frac{(x-1)^{2}}{z}$+ $\frac{(y-1)^{2}}{x}$+ $\frac{(z-1)^{2}}{y}$ . Bài 2: Cho x+y=1. Tìm Min: P= $\frac{1}{xy}$+ $\frac{1}{x^{2}+y^{2}}$ . Bài 3: Cho a;b>0 thỏa mãn $\frac{1}{a}$+ $\frac{1}{b}$=2 Tìm Max: Q= $\frac{1}{a^{4}+b^{2}+2ab^{2}}$+ $\frac{1}{b^{4}+a^{2}+2ba^{2}}$ . Giúp mình với ạ T.T Hứa sẽ vote 5*=cảm ơn+ câu trả lời hay nhất P/s: Ai giải đc nhớ ghi rõ bài giùm mình ạ. Thanks
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