Question

Numerele reale a, b, c aparțin [0,1]. Demonstrati că

$\frac{a(a + 3)}{10 + {b}^{3} + c {}^{3} } + \frac{b(b + 3)}{10 + {a}^{3} + {c}^{3} } + \frac{c(c + 3)}{10 + {a}^{3} + {b}^{3} } \leqslant 1$ 1
urgent vă rog

Answer 1

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