B
bells_1410


chứng minh rằng \forall a, b, c \geq; 0:
[TEX]\frac{a^2}{b}+\frac{b^2}{c}+\frac{c^2}{a}\geq\sqrt{a^2-ab+b^2}+\sqrt{b^2-bc+c^2}+\sqrt{c^2-ac+a^2}[/TEX]
)
[TEX]\frac{a^2}{b}+\frac{b^2}{c}+\frac{c^2}{a}\geq\sqrt{a^2-ab+b^2}+\sqrt{b^2-bc+c^2}+\sqrt{c^2-ac+a^2}[/TEX]
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