-_- 39 Report post Posted May 14, 2016 (edited) Diberikan bilangan bulat positif $n\geq 2$. Evaluasi hasil penjumlahan $$\sum\limits_{k=0}^{n-1} \frac{1}{1+8 \sin^2{(\frac{k\pi}{n})}}$$ Tes 4 Nomor 3 Pelatnas Tahap 3 IMO 2016 Edited May 14, 2016 by -_- Share this post Link to post Share on other sites
