User contributions
- 22:59, 7 November 2016 (diff | hist) . . (+4,738) . . 1983 AIME Problems/Problem 15
- 21:34, 7 November 2016 (diff | hist) . . (+44) . . N File:Aime1983p15s2.png (For the solution 2 of AIME 1983, problem 15.) (current)
- 23:46, 30 December 2015 (diff | hist) . . (+16) . . 2010 AMC 10B Problems/Problem 25 (→Critique of the (Critique of the Critique))
- 23:45, 30 December 2015 (diff | hist) . . (+1,238) . . 2010 AMC 10B Problems/Problem 25
- 12:56, 18 April 2014 (diff | hist) . . (+1,792) . . 2013 USAMO Problems/Problem 5
- 11:23, 29 January 2014 (diff | hist) . . (+1) . . 2013 AMC 12B Problems/Problem 20 (→Solution)
- 11:23, 29 January 2014 (diff | hist) . . (+34) . . 2013 AMC 12B Problems/Problem 20 (→Solution)
- 11:22, 29 January 2014 (diff | hist) . . (-279) . . 2013 AMC 12B Problems/Problem 20 (→Solution)
- 14:32, 28 January 2014 (diff | hist) . . (+133) . . 2013 AMC 12A Problems/Problem 25
- 14:28, 28 January 2014 (diff | hist) . . (-12) . . 2013 AMC 12A Problems/Problem 25
- 06:25, 8 March 2013 (diff | hist) . . (-3) . . 2010 AIME I Problems/Problem 15 (→Solution 4)
- 06:22, 8 March 2013 (diff | hist) . . (+1,589) . . 2010 AIME I Problems/Problem 15
- 19:42, 25 February 2013 (diff | hist) . . (+1,383) . . 2012 AIME II Problems/Problem 13
- 15:04, 25 February 2013 (diff | hist) . . (-202) . . 2013 AMC 12B Problems/Problem 20 (→Solution)
- 14:28, 25 February 2013 (diff | hist) . . (+1,310) . . 2013 AMC 12B Problems/Problem 24 (→Solution)
- 23:55, 13 February 2013 (diff | hist) . . (+29) . . 2013 AMC 12A Problems/Problem 20
- 23:55, 13 February 2013 (diff | hist) . . (+2) . . 2013 AMC 12A Problems/Problem 20
- 23:54, 13 February 2013 (diff | hist) . . (+9) . . 2013 AMC 12A Problems/Problem 20
- 18:32, 12 February 2013 (diff | hist) . . (+1,101) . . 2013 AMC 12A Problems/Problem 16
- 13:22, 12 February 2013 (diff | hist) . . (+381) . . 2013 AMC 12A Problems/Problem 19
- 13:15, 12 February 2013 (diff | hist) . . (+310) . . 2013 AMC 12A Problems/Problem 21
- 13:08, 12 February 2013 (diff | hist) . . (+1) . . 2013 AMC 12A Problems/Problem 24
- 13:08, 12 February 2013 (diff | hist) . . (-1) . . 2013 AMC 12A Problems (→Problem 24)
- 13:07, 12 February 2013 (diff | hist) . . (+9) . . 2013 AMC 12A Problems (Undo revision 51039 by Lightest (talk))
- 13:07, 12 February 2013 (diff | hist) . . (-9) . . 2013 AMC 12A Problems (→Problem 24)
- 10:31, 12 February 2013 (diff | hist) . . (+1,997) . . N 2013 AMC 12A Problems/Problem 20 (Created page with "Imagine 19 numbers are just 19 persons sitting evenly around a circle <math>C</math>; each of them is facing to the center. One may check that <math>x \succ y</math> iff <math>...")
- 16:19, 11 February 2013 (diff | hist) . . (+18) . . 2013 AMC 12A Problems/Problem 25
- 16:17, 11 February 2013 (diff | hist) . . (+1,660) . . N 2013 AMC 12A Problems/Problem 25 (Created page with "Suppose <math>f(z)=z^2+iz+1=c=a+bi</math>. We look for <math>z</math> with <math>Im(z)>0</math> such that <math>a,b</math> are integers where <math>|a|, |b|\leq 10</math>. First...")
- 16:00, 11 February 2013 (diff | hist) . . (+186) . . 2013 AMC 12A Problems/Problem 24
- 15:55, 11 February 2013 (diff | hist) . . (+2,002) . . N 2013 AMC 12A Problems/Problem 24 (Created page with "Suppose <math>p</math> is the answer. We calculate <math>1-p</math>. Assume that the circumradius of the 12-gon is <math>1</math>, and the 6 different lengths are <math>a_1</mat...")
- 18:20, 31 December 2012 (diff | hist) . . (+43) . . 2009 AMC 12B Problems/Problem 25 (→Solution 2)
- 18:19, 31 December 2012 (diff | hist) . . (-4) . . 2009 AMC 12B Problems/Problem 25 (→Solution 2)
- 18:18, 31 December 2012 (diff | hist) . . (+1,814) . . 2009 AMC 12B Problems/Problem 25
- 05:19, 7 December 2012 (diff | hist) . . (+3,624) . . 2012 AMC 12A Problems/Problem 22 (→Problem)
- 01:00, 7 December 2012 (diff | hist) . . (-1) . . 2012 AMC 10B Problems/Problem 25 (→Solution)
- 14:20, 6 December 2012 (diff | hist) . . (+8) . . 2012 AMC 12B Problems/Problem 25 (→Solution 2)
- 14:20, 6 December 2012 (diff | hist) . . (+48) . . 2012 AMC 12B Problems/Problem 25 (→Solution 2)
- 14:19, 6 December 2012 (diff | hist) . . (+96) . . 2012 AMC 12B Problems/Problem 25 (→Solution 2)
- 14:16, 6 December 2012 (diff | hist) . . (+76) . . 2012 AMC 12B Problems/Problem 25 (→Solution 2)
- 14:11, 6 December 2012 (diff | hist) . . (+1) . . 2012 AMC 12B Problems/Problem 25 (→Solution 2)
- 14:09, 6 December 2012 (diff | hist) . . (+1) . . 2012 AMC 12B Problems/Problem 25 (→Solution 2)
- 14:07, 6 December 2012 (diff | hist) . . (-1) . . 2012 AMC 12B Problems/Problem 25 (→Solution 1)
- 14:06, 6 December 2012 (diff | hist) . . (+1,949) . . 2012 AMC 12B Problems/Problem 25
- 05:55, 6 December 2012 (diff | hist) . . (+18) . . 2012 AMC 12B Problems/Problem 24 (→Solution)
- 05:48, 6 December 2012 (diff | hist) . . (+20) . . 2012 AMC 12B Problems/Problem 24 (→Solution: missed an important case)
- 05:25, 6 December 2012 (diff | hist) . . (-51) . . 2012 AMC 12B Problems/Problem 24 (→Solution)
- 05:22, 6 December 2012 (diff | hist) . . (+20) . . 2012 AMC 12B Problems/Problem 24 (→Solution)
- 05:21, 6 December 2012 (diff | hist) . . (+89) . . 2012 AMC 12B Problems/Problem 24 (→Solution)
- 05:18, 6 December 2012 (diff | hist) . . (+28) . . 2012 AMC 12B Problems/Problem 24 (→Solution)
- 05:16, 6 December 2012 (diff | hist) . . (-8) . . 2012 AMC 12B Problems/Problem 24 (→Solution)
- 05:15, 6 December 2012 (diff | hist) . . (+2,713) . . N 2012 AMC 12B Problems/Problem 24 (Created page with "== Problem 24 == Define the function <math>f_1</math> on the positive integers by setting <math>f_1(1)=1</math> and if <math>n=p_1^{e_1}p_2^{e_2}\cdots p_k^{e_k}</math> is the p...")
- 04:09, 6 December 2012 (diff | hist) . . (-209) . . 2012 AMC 12B Problems/Problem 23 (→Solution)
- 04:03, 6 December 2012 (diff | hist) . . (+1,967) . . 2012 AMC 12B Problems/Problem 23
- 02:31, 6 December 2012 (diff | hist) . . (+1,239) . . 2012 AMC 12B Problems/Problem 23
- 18:38, 5 December 2012 (diff | hist) . . (+155) . . 2012 AMC 12B Problems/Problem 23
- 23:51, 4 December 2012 (diff | hist) . . (-30) . . 2012 AMC 10B Problems/Problem 25 (→Solution)
- 23:51, 4 December 2012 (diff | hist) . . (+12) . . 2012 AMC 10B Problems/Problem 25 (→Solution)
- 23:50, 4 December 2012 (diff | hist) . . (+6,187) . . 2012 AMC 10B Problems/Problem 25
- 23:17, 4 December 2012 (diff | hist) . . (+32) . . 2012 AMC 12B Problems/Problem 21
- 23:15, 4 December 2012 (diff | hist) . . (+1,844) . . 2012 AMC 12B Problems/Problem 21
- 12:32, 4 December 2012 (diff | hist) . . (+29) . . 2012 AMC 12B Problems/Problem 20 (→Solution)
- 12:31, 4 December 2012 (diff | hist) . . (+2,006) . . N 2012 AMC 12B Problems/Problem 20 (Created page with "== Problem 20 == A trapezoid has side lengths 3, 5, 7, and 11. The sums of all the possible areas of the trapezoid can be written in the form of <math>r_1\sqrt{n_1}+r_2\sqrt{n_2...")
- 11:20, 4 December 2012 (diff | hist) . . (+1,686) . . N 2012 AMC 12B Problems/Problem 18 (Created page with "== Problem 18 == Let <math>(a_1,a_2, \dots ,a_{10})</math> be a list of the first 10 positive integers such that for each <math>2 \le i \le 10</math> either <math>a_i+1</math> o...")
- 01:57, 4 December 2012 (diff | hist) . . (+1,598) . . 2009 AMC 12A Problems/Problem 23
- 01:50, 4 December 2012 (diff | hist) . . (+28) . . 2012 AMC 12B Problems/Problem 17 (→Solution 3 (Fast))
- 01:49, 4 December 2012 (diff | hist) . . (+799) . . 2012 AMC 12B Problems/Problem 17
- 15:37, 7 May 2012 (diff | hist) . . (0) . . User:Lightest (→Problem 2)
- 15:37, 7 May 2012 (diff | hist) . . (-3) . . User:Lightest (→Problem 3)
- 15:36, 7 May 2012 (diff | hist) . . (+2) . . User:Lightest (→Solution)
- 15:35, 7 May 2012 (diff | hist) . . (+696) . . User:Lightest (→Problem 3)
- 15:34, 7 May 2012 (diff | hist) . . (-1) . . 2012 USAJMO Problems/Problem 3 (→Solution 3)
- 15:34, 7 May 2012 (diff | hist) . . (+10) . . 2012 USAJMO Problems/Problem 3 (→Solution 3)
- 15:33, 7 May 2012 (diff | hist) . . (-189) . . 2012 USAJMO Problems/Problem 3 (→Solution 3)
- 15:31, 7 May 2012 (diff | hist) . . (+54) . . 2012 USAJMO Problems/Problem 3 (→Solution 3)
- 15:30, 7 May 2012 (diff | hist) . . (+879) . . 2012 USAJMO Problems/Problem 3
- 13:04, 7 May 2012 (diff | hist) . . (-56) . . User:Lightest (→Problem 3)
- 13:02, 7 May 2012 (diff | hist) . . (+3) . . User:Lightest (→Problem 3)
- 13:01, 7 May 2012 (diff | hist) . . (+2,372) . . User:Lightest
- 20:43, 6 May 2012 (diff | hist) . . (-25) . . User:Lightest (→Solution outline)
- 20:43, 6 May 2012 (diff | hist) . . (+155) . . User:Lightest (→Problem 4)
- 20:41, 6 May 2012 (diff | hist) . . (+1) . . 2012 USAJMO Problems/Problem 4 (→Solution)
- 20:41, 6 May 2012 (diff | hist) . . (+75) . . 2012 USAJMO Problems/Problem 4 (→Solution)
- 20:33, 6 May 2012 (diff | hist) . . (-26) . . 2012 USAJMO Problems/Problem 4 (→Solution)
- 20:30, 6 May 2012 (diff | hist) . . (+89) . . 2012 USAJMO Problems/Problem 4 (→Solution)
- 20:27, 6 May 2012 (diff | hist) . . (+2,699) . . 2012 USAJMO Problems/Problem 4 (→Solution)
- 20:24, 6 May 2012 (diff | hist) . . (+254) . . User:Lightest (→Solution outline)
- 20:21, 6 May 2012 (diff | hist) . . (+2,415) . . User:Lightest (→Problem 4)
- 11:04, 6 May 2012 (diff | hist) . . (+3,003) . . User:Lightest
- 10:15, 5 May 2012 (diff | hist) . . (+14) . . 2012 USAMO Problems/Problem 5 (→Solution)
- 22:36, 3 May 2012 (diff | hist) . . (+251) . . N Talk:2012 USAMO Problems/Problem 5 (Created page with "To ensure that Menelaus' Theorem works, isn't it necessary to check the configuration of the points so that the product of those "oriented ratios" is actually <math>-1</math> but...") (current)
- 22:29, 3 May 2012 (diff | hist) . . (-18) . . Talk:2012 USAMO Problems/Problem 4 (current)
- 22:29, 3 May 2012 (diff | hist) . . (+2) . . Talk:2012 USAMO Problems/Problem 4
- 22:29, 3 May 2012 (diff | hist) . . (+9) . . Talk:2012 USAMO Problems/Problem 4
- 22:28, 3 May 2012 (diff | hist) . . (+27) . . Talk:2012 USAMO Problems/Problem 4
- 22:28, 3 May 2012 (diff | hist) . . (-8) . . Talk:2012 USAMO Problems/Problem 4
- 22:27, 3 May 2012 (diff | hist) . . (+6) . . Talk:2012 USAMO Problems/Problem 4
- 22:26, 3 May 2012 (diff | hist) . . (+13) . . Talk:2012 USAMO Problems/Problem 4
- 22:26, 3 May 2012 (diff | hist) . . (-2,124) . . Talk:2012 USAMO Problems/Problem 4
- 22:25, 3 May 2012 (diff | hist) . . (+2,178) . . Talk:2012 USAMO Problems/Problem 4
- 22:25, 3 May 2012 (diff | hist) . . (+2,176) . . N Talk:2012 USAMO Problems/Problem 4 (Created page with "Though not as elegant as the inductive proof, my proof for this problem is quite different from the one posted in the Page, so I would like to paste it here just for reference. ...")
- 16:32, 3 May 2012 (diff | hist) . . (0) . . 2012 USAMO Problems/Problem 3 (→Solution that involves a non-elementary result)
- 16:31, 3 May 2012 (diff | hist) . . (+16) . . 2012 USAMO Problems/Problem 3 (→Solution that involves a non-elementary result)
- 16:30, 3 May 2012 (diff | hist) . . (+15) . . 2012 USAMO Problems/Problem 3 (→Solution that involves a non-elementary result)
- 16:30, 3 May 2012 (diff | hist) . . (0) . . 2012 USAMO Problems/Problem 3 (→Solution that involves a non-elementary result)
- 16:29, 3 May 2012 (diff | hist) . . (+385) . . 2012 USAMO Problems/Problem 3 (→Solution that involves a non-elementary result)
- 16:22, 3 May 2012 (diff | hist) . . (+123) . . Talk:2012 USAMO Problems/Problem 3 (current)
- 16:18, 3 May 2012 (diff | hist) . . (+34) . . Talk:2012 USAMO Problems/Problem 3
- 16:14, 3 May 2012 (diff | hist) . . (+128) . . Talk:2012 USAMO Problems/Problem 3
- 21:32, 2 May 2012 (diff | hist) . . (+2) . . 2012 USAMO Problems/Problem 3 (→Solution that involves a non-elementary result)
- 21:31, 2 May 2012 (diff | hist) . . (+54) . . 2012 USAMO Problems/Problem 3 (→Solution that involves a non-elementary result)
- 21:29, 2 May 2012 (diff | hist) . . (+87) . . 2012 USAMO Problems/Problem 3 (→Solution that involves a non-elementary result)
- 21:27, 2 May 2012 (diff | hist) . . (+49) . . 2012 USAMO Problems/Problem 3 (→Solution that involves a non-elementary result)
- 21:24, 2 May 2012 (diff | hist) . . (+10) . . 2012 USAMO Problems/Problem 3 (→Solution that involves a non-elementary result)
- 21:23, 2 May 2012 (diff | hist) . . (+2,803) . . 2012 USAMO Problems/Problem 3
- 15:15, 26 April 2012 (diff | hist) . . (+1,119) . . N 1968 IMO Problems/Problem 5 (Created page with "==Problem 5== Let <math>f</math> be a real-valued function defined for all real numbers <math>x</math> such that, for some positive constant <math>a</math>, the equation <cmath>...")
- 15:08, 26 April 2012 (diff | hist) . . (0) . . m 1968 IMO Problems (→Problem 5)
- 17:35, 24 April 2012 (diff | hist) . . (+56) . . 2010-2011 Mock USAJMO Problems/Solutions/Problem 2 (→Solution 1) (current)
- 17:34, 24 April 2012 (diff | hist) . . (+1,078) . . N 2010-2011 Mock USAJMO Problems/Solutions/Problem 2 (Created page with "==Problem 2== Let <math>x, y, z</math> be positive real numbers such that <math>x+y+z = 1</math>. Prove that <cmath>\frac{3x+1}{y+z}+\frac{3y+1}{z+x}+\frac{3z+1}{x+y}\ge\frac{4}{...")
- 21:54, 1 April 2012 (diff | hist) . . (+53) . . 2011 USAJMO Problems/Problem 4 (→Solution)
- 21:54, 1 April 2012 (diff | hist) . . (+59) . . N User:Lightest (Created page with "For any information, please contact me at MATHTAM@gmail.com")
- 21:53, 1 April 2012 (diff | hist) . . (+1,303) . . 2011 USAJMO Problems/Problem 4