nguyenthithuyduong12 nguyenthithuyduong12 07-09-2021 Mathematics contestada Let the positive numbers a, b, c. Prove that [tex]\frac{a^{2013}+b^{2013}+c^{2013} }{a^{2012}+b^{2012}+c^{2012}} \geq \frac{a+b+c}{3\\}[/tex]
