-_- 39 Report post Posted February 10, 2016 Untuk semua $a,b,c$ real positif, buktikan $\frac{a}{b}+\frac{b}{c}+\frac{c}{a}\geq \frac{a+b}{b+c} + \frac{b+c}{c+a} +1$ Share this post Link to post Share on other sites
slurp 0 Report post Posted February 10, 2016 ... tapi salah? Share this post Link to post Share on other sites
BoesFX 7 Report post Posted February 29, 2016 Counterexample : (a,b,c) = (101, 102, 100) . Share this post Link to post Share on other sites
