User contributions
(newest | oldest) View (newer 20 | older 20) (20 | 50 | 100 | 250 | 500)
- 22:49, 13 December 2018 (diff | hist) . . (-4) . . 2003 JBMO Problems/Problem 3
- 01:00, 13 December 2018 (diff | hist) . . (0) . . 2003 JBMO Problems/Problem 3 (→Solution)
- 23:30, 12 December 2018 (diff | hist) . . (-1) . . 2003 JBMO Problems/Problem 3 (→Solution)
- 16:36, 12 December 2018 (diff | hist) . . (+22) . . 2003 JBMO Problems/Problem 3
- 16:35, 12 December 2018 (diff | hist) . . (+4,240) . . N 2003 JBMO Problems/Problem 3 (Created page with "==Problem== Let <math>D</math>, <math>E</math>, <math>F</math> be the midpoints of the arcs <math>BC</math>, <math>CA</math>, <math>AB</math> on the circumcircle of a triangl...")
- 16:38, 9 December 2018 (diff | hist) . . (+2,573) . . N 2002 JBMO Problems/Problem 2 (Created page with "==Problem== Two circles with centers <math>O_{1}</math> and <math>O_{2}</math> meet at two points <math>A</math> and <math>B</math> such that the centers of the circles are o...") (current)
- 21:37, 8 December 2018 (diff | hist) . . (+1,365) . . N 2002 JBMO Problems/Problem 1 (Created page with "==Problem== The triangle <math>ABC</math> has <math>CA = CB</math>. <math>P</math> is a point on the circumcircle between <math>A</math> and <math>B</math> (and on the opposi...") (current)
- 18:37, 8 December 2018 (diff | hist) . . (+3,130) . . N 2001 JBMO Problems/Problem 3 (Created page with "==Problem 3== Let <math>ABC</math> be an equilateral triangle and <math>D,E</math> on the sides <math>[AB]</math> and <math>[AC]</math> respectively. If <math>DF,EG</math> (...")
- 18:09, 8 December 2018 (diff | hist) . . (-255) . . 2001 JBMO Problems (→Problem 3) (current)
- 17:37, 8 December 2018 (diff | hist) . . (+358) . . 2001 JBMO Problems (→Problem 3)
- 00:53, 5 December 2018 (diff | hist) . . (+21) . . 1990 AIME Problems/Problem 11
- 00:41, 5 December 2018 (diff | hist) . . (0) . . N File:Problem 3 Pic.jpg (current)
- 00:35, 5 December 2018 (diff | hist) . . (+136) . . 2000 JBMO Problems/Problem 3 (current)
- 00:21, 5 December 2018 (diff | hist) . . (-1) . . 2000 JBMO Problems/Problem 3
- 00:09, 5 December 2018 (diff | hist) . . (+2,060) . . N 2000 JBMO Problems/Problem 3 (Created page with "==Problem 3== A half-circle of diameter <math>EF</math> is placed on the side <math>BC</math> of a triangle <math>ABC</math> and it is tangent to the sides <math>AB</math> an...")
- 00:25, 4 December 2018 (diff | hist) . . (+125) . . 2000 JBMO Problems/Problem 2 (→Solution)
- 00:24, 4 December 2018 (diff | hist) . . (0) . . 2000 JBMO Problems/Problem 1
- 00:20, 4 December 2018 (diff | hist) . . (+580) . . 1999 JBMO Problems/Problem 4
- 00:18, 4 December 2018 (diff | hist) . . (+216) . . 1998 JBMO Problems/Problem 2
- 00:12, 4 December 2018 (diff | hist) . . (+826) . . N 2000 JBMO Problems/Problem 2 (Created page with "== Solution == After rearranging we get: <math>(k-n)(k+n) = 3^n</math> Let <math>k-n = 3^a, k+n = 3^{n-a}</math> we get: <math>2n = 3^a(3^{n-2a} - 1)</math> or, <math>(2n/(...")
(newest | oldest) View (newer 20 | older 20) (20 | 50 | 100 | 250 | 500)