User contributions
- 00:05, 12 February 2014 (diff | hist) . . (+7) . . 2014 AMC 12A Problems/Problem 15 (→Solution Two)
- 01:40, 12 June 2011 (diff | hist) . . (0) . . 1972 USAMO Problems/Problem 2 (→Solution 2)
- 01:40, 12 June 2011 (diff | hist) . . (-650) . . 1972 USAMO Problems/Problem 2 (→Solution 1)
- 21:40, 13 April 2011 (diff | hist) . . (-547) . . 1994 USAMO Problems/Problem 4 (→Solution)
- 21:39, 13 April 2011 (diff | hist) . . (-670) . . 1994 USAMO Problems
- 23:41, 11 April 2011 (diff | hist) . . (-29) . . 1994 USAMO Problems/Problem 4
- 23:40, 11 April 2011 (diff | hist) . . (+559) . . N 1994 USAMO Problems/Problem 4 (Created page with 'Since each <math>a_{i}</math> is positive, by Muirhead's inequality, <math>2(\sum a_{i}^2) \ge (\sum a)^2 \ge n</math>. Now we claim that <math> \frac{n}{2}> (\frac{1}{4})*(1+..…')
- 21:14, 5 April 2010 (diff | hist) . . (+203) . . N 2010 AMC 10B Problems/Problem 25 (Created page with 'P(x)-a=(x-1)(x-3)(x-5)(x-7)Q(x). Then, plugging in values of 2,4,6,8, we get -2a=-15Q(2)=9Q(4)=-15Q(6)=105Q(8). Thus, the least value of a must be the lcm(15,9,15,105). Solving,…')
- 23:40, 29 March 2010 (diff | hist) . . (+6,251) . . N 2010 AMC 10B (Created page with 'Note: Excuse me for my notation, I hope someone can put these into correct format. 1. What is 100(100-3)-(100*100-3)? (A)-20,000 (B)-10,000 (C) -297 (D)-6 (E)0 2.Makayla attende…')
- 17:56, 19 March 2010 (diff | hist) . . (+596) . . 2001 IMO Shortlist Problems/N6
- 16:20, 6 March 2010 (diff | hist) . . (-12) . . 1972 USAMO Problems/Problem 2
- 16:20, 6 March 2010 (diff | hist) . . (+631) . . 1972 USAMO Problems/Problem 2
