30 May 2011

• 20:2420:24, 30 May 2011 diff hist +1 2008 IMO Problems/Problem 3 →Solution
• 20:2320:23, 30 May 2011 diff hist +24 m 2008 IMO Problems/Problem 3 →Solution
• 20:2220:22, 30 May 2011 diff hist +2,001 2008 IMO Problems/Problem 3 →Solution: added a second solution

11 May 2010

• 17:3317:33, 11 May 2010 diff hist +23 Illinois Mathcounts →National Team Awards and Placement: added 2010
• 17:3217:32, 11 May 2010 diff hist +21 Illinois Mathcounts →IL State Team Members (National Written Place, CD place if unknown): added 2010

31 May 2009

• 18:0718:07, 31 May 2009 diff hist −4 Illinois Mathcounts →IL State Team Champions
• 18:0618:06, 31 May 2009 diff hist +127 Illinois Mathcounts →IL State Team Champions
• 18:0518:05, 31 May 2009 diff hist +11 Illinois Mathcounts →National Team Awards and Placement
• 18:0518:05, 31 May 2009 diff hist +12 Illinois Mathcounts →State Countdown Winners
• 18:0518:05, 31 May 2009 diff hist +260 Illinois Mathcounts →State Countdown Winners

19 December 2008

• 17:0917:09, 19 December 2008 diff hist +2 m User:Wsjradha/Cotangent Sum Problem →Solution:
• 17:0717:07, 19 December 2008 diff hist +1 User:Wsjradha/Cotangent Sum Problem →Problem:
• 17:0717:07, 19 December 2008 diff hist +1 User:Wsjradha/Cotangent Sum Problem →Problem:

27 November 2008

• 12:3812:38, 27 November 2008 diff hist −38 m User:Wsjradha/Cotangent Sum Problem formatting

14 November 2008

• 15:2415:24, 14 November 2008 diff hist +1 m User:Wsjradha/Cotangent Sum Problem minor LaTex and spacing

30 October 2008

• 19:0519:05, 30 October 2008 diff hist −133 Illinois mathematics competitions →Illinois high school mathematics competitions

15 July 2008

• 15:5115:51, 15 July 2008 diff hist +2,585 N User:Wsjradha/Cotangent Sum Problem New page: '''Cotangent Sum Problem''' AIME-level of difficulty Problem: Let <math>z_1, z_2, \ldots, z_{20}</math> be the twenty (complex) roots of the equation: <math>z^{20} - 4z^{19} + 9z^{18...