Let \(a, b, c\) be positive real numbers such that \(abc=1\). Prove that \(\displaystyle \frac{1}{a^3(b+c)}+\frac{1}{b^3(a+c)}+\frac{1}{c^3(a+b)}\ge \frac{3}{2}.\)
1995IMO,https://artofproblemsolving.com/ ... _Problems/Problem_2作者: zerogil159 時間: 2022-4-24 11:53