Cho x ,y>0 thoả mãn $\frac{x}{x+1}+\frac{2y}{y+1}=1$. Tìm max $P=xy^2$
$\frac{x}{x+1}+\frac{2y}{y+1}=1$
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trang2803
, 14-06-2018 - 21:28
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