User contributions
- 13:29, 26 November 2009 (diff | hist) . . (-2,444) . . 2008 AMC 12B Problems/Problem 20 (→Solution)
- 18:09, 25 November 2009 (diff | hist) . . (+5) . . m 2008 AMC 12B Problems/Problem 20 (→Problem)
- 21:20, 26 March 2009 (diff | hist) . . (-1,470) . . Derivative/Formulas (→List of formulas)