User contributions
- 23:07, 24 December 2024 (diff | hist) . . (-1,426) . . 2013 Indonesia MO Problems/Problem 1 (→Solution) (current)
- 23:01, 24 December 2024 (diff | hist) . . (0) . . 2013 Indonesia MO Problems/Problem 1 (→See Also)
- 23:00, 24 December 2024 (diff | hist) . . (-68) . . 2013 Indonesia MO Problems/Problem 1 (→Problem 1)
- 22:59, 24 December 2024 (diff | hist) . . (+625) . . 2013 Indonesia MO Problems/Problem 1 (→Problem)
- 22:58, 24 December 2024 (diff | hist) . . (+2,460) . . N 2013 Indonesia MO Problems/Problem 1 (Created page with "==Problem== Show that for any positive integers <math>a</math> and <math>b</math>, the number <cmath>n=\mathrm{LCM}(a,b)+\mathrm{GCD}(a,b)-a-b</cmath> is an even non-negative...")
- 21:14, 24 December 2024 (diff | hist) . . (+455) . . 2012 Indonesia MO Problems/Problem 5 (current)
- 20:49, 24 December 2024 (diff | hist) . . (+341) . . 2012 Indonesia MO Problems/Problem 5
- 03:47, 24 December 2024 (diff | hist) . . (+1,037) . . 2012 Indonesia MO Problems/Problem 5
- 03:40, 24 December 2024 (diff | hist) . . (+401) . . N 2012 Indonesia MO Problems/Problem 5 (Created page with "==Problem== Let <math>n</math> be a positive integer. Show that the equation<cmath>\sqrt{x}+\sqrt{y}=\sqrt{n}</cmath>have solution of pairs of positive integers <math>(x,y)</m...")
- 19:19, 20 December 2024 (diff | hist) . . (+12) . . 2012 Indonesia MO Problems/Problem 7 (current)
- 19:16, 20 December 2024 (diff | hist) . . (+2,053) . . 2012 Indonesia MO Problems/Problem 7
- 07:35, 20 December 2024 (diff | hist) . . (-13) . . 2012 Indonesia MO Problems/Problem 2 (current)
- 07:26, 20 December 2024 (diff | hist) . . (-10) . . 2012 Indonesia MO Problems/Problem 2
- 07:26, 20 December 2024 (diff | hist) . . (+68) . . 2012 Indonesia MO Problems/Problem 2
- 07:25, 20 December 2024 (diff | hist) . . (+322) . . 2012 Indonesia MO Problems/Problem 2
- 06:59, 20 December 2024 (diff | hist) . . (+286) . . N 2012 Indonesia MO Problems/Problem 7 (Created page with "Problem 7 Let <math>n</math> be a positive integer. Show that the equation<cmath>\sqrt{x}+\sqrt{y}=\sqrt{n}</cmath>have solution of pairs of positive integers <math>(x,y)</mat...")
- 02:50, 20 December 2024 (diff | hist) . . (+2) . . 2012 Indonesia MO Problems/Problem 2
- 02:46, 20 December 2024 (diff | hist) . . (+711) . . N 2012 Indonesia MO Problems/Problem 2 (Created page with "By AM-GM, <cmath>(1+a_k)^k=(\frac{1}{k-1}+\frac{1}{k-1}+\dots+\frac{1}{k-1}+n_k)^k\geq (k\sqrt[k]{\frac{a_k}{(k-1)^{k-1}})^k=\frac{k^k\cdot a_k}{(k-1)^{k-1}}</cmath> Substitu...")
