Bài toán: Giải phương trình nghiệm thực dương:
$$\dfrac{a^2+2bc}{b^2+c^2}+\dfrac{b^2+2ac}{c^2+a^2}+\dfrac{c^2+2ab}{a^2+b^2}=2$$
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Posted 11-03-2013 - 23:23
Oral1020
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- tieutuhamchoi98, Sagittarius912, Tienanh tx and 2 others like this
"If I feel unhappy,I do mathematics to become happy.
If I feel happy,I do mathematics to keep happy."
Alfréd Rényi
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