User contributions
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- 11:54, 16 May 2012 (diff | hist) . . (+173) . . m 1983 USAMO (made it pretty)
- 11:53, 16 May 2012 (diff | hist) . . (+327) . . m 1984 USAMO (made it pretty)
- 11:53, 16 May 2012 (diff | hist) . . (+80) . . m 1985 USAMO (made it pretty)
- 11:52, 16 May 2012 (diff | hist) . . (+80) . . m 1986 USAMO (made it pretty)
- 11:51, 16 May 2012 (diff | hist) . . (+80) . . m 1987 USAMO (made it pretty)
- 11:45, 16 May 2012 (diff | hist) . . (+1,153) . . 1988 USAMO Problems/Problem 4 (added solution)
- 16:15, 15 May 2012 (diff | hist) . . (+1) . . m 1951 AHSME Problems/Problem 47
- 16:15, 15 May 2012 (diff | hist) . . (+1,140) . . N 1951 AHSME Problems/Problem 47 (Created page with "== Problem == If <math>r</math> and <math>s</math> are the roots of the equation <math>ax^2+bx+c=0</math>, the value of <math> \frac{1}{r^{2}}+\frac{1}{s^{2}} </math> is: <math>...")
- 16:07, 15 May 2012 (diff | hist) . . (0) . . 1997 PMWC Problems/Problem T9 (this ain't no introductory problem)
- 16:07, 15 May 2012 (diff | hist) . . (+50) . . 1997 PMWC Problems/Problem T7
- 16:06, 15 May 2012 (diff | hist) . . (0) . . m 1997 PMWC Problems/Problem T5
- 16:06, 15 May 2012 (diff | hist) . . (0) . . m 1997 PMWC Problems/Problem T3
- 16:06, 15 May 2012 (diff | hist) . . (0) . . 1997 PMWC Problems/Problem T2
- 16:06, 15 May 2012 (diff | hist) . . (+45) . . 1997 PMWC Problems/Problem T1
- 16:05, 15 May 2012 (diff | hist) . . (0) . . m 1997 PMWC Problems/Problem I15
- 16:05, 15 May 2012 (diff | hist) . . (0) . . m 1997 PMWC Problems/Problem I14 (current)
- 16:05, 15 May 2012 (diff | hist) . . (0) . . m 1997 PMWC Problems/Problem I13
- 16:05, 15 May 2012 (diff | hist) . . (+21) . . 1997 PMWC Problems/Problem I12
- 16:04, 15 May 2012 (diff | hist) . . (0) . . 1997 PMWC Problems/Problem I11
- 16:04, 15 May 2012 (diff | hist) . . (-3) . . m 1997 PMWC Problems/Problem I10
- 16:04, 15 May 2012 (diff | hist) . . (0) . . m 1997 PMWC Problems/Problem I9
- 16:04, 15 May 2012 (diff | hist) . . (0) . . m 1997 PMWC Problems/Problem I7
- 16:04, 15 May 2012 (diff | hist) . . (-3) . . m 1997 PMWC Problems/Problem I6
- 16:04, 15 May 2012 (diff | hist) . . (0) . . m 1997 PMWC Problems/Problem I5
- 16:03, 15 May 2012 (diff | hist) . . (0) . . m 1997 PMWC Problems/Problem I5
- 16:03, 15 May 2012 (diff | hist) . . (0) . . m 1997 PMWC Problems/Problem I4
- 16:03, 15 May 2012 (diff | hist) . . (0) . . m 1997 PMWC Problems/Problem I3
- 16:03, 15 May 2012 (diff | hist) . . (0) . . m 1997 PMWC Problems/Problem I2
- 16:03, 15 May 2012 (diff | hist) . . (0) . . m 1997 PMWC Problems/Problem I1
- 16:02, 15 May 2012 (diff | hist) . . (+17) . . User talk:1=2 (1988 USAMO complete)
- 16:02, 15 May 2012 (diff | hist) . . (+83) . . 1988 USAMO Problems
- 16:01, 15 May 2012 (diff | hist) . . (0) . . m 1988 USAMO
- 16:01, 15 May 2012 (diff | hist) . . (+12) . . m 1988 USAMO (→See also)
- 16:01, 15 May 2012 (diff | hist) . . (+68) . . 1988 USAMO
- 15:59, 15 May 2012 (diff | hist) . . (+509) . . N 1988 USAMO Problems/Problem 5 (Created page with "==Problem== Let <math>p(x)</math> be the polynomial <math>(1-x)^a(1-x^2)^b(1-x^3)^c\cdots(1-x^{32})^k</math>, where <math>a, b, \cdots, k</math> are integers. When expanded in po...")
- 15:58, 15 May 2012 (diff | hist) . . (+387) . . N 1988 USAMO Problems/Problem 4 (Created page with "==Problem== <math>\Delta ABC</math> is a triangle with incenter <math>I</math>. Show that the circumcenters of <math>\Delta IAB</math>, <math>\Delta IBC</math>, and <math>\Delta ...")
- 15:58, 15 May 2012 (diff | hist) . . (+479) . . N 1988 USAMO Problems/Problem 3 (Created page with "==Problem== Let <math>X</math> be the set <math>\{ 1, 2, \cdots , 20\}</math> and let <math>P</math> be the set of all 9-element subsets of <math>X</math>. Show that for any map ...")
- 15:57, 15 May 2012 (diff | hist) . . (+324) . . N 1988 USAMO Problems/Problem 2 (Created page with "==Problem== The cubic polynomial <math>x^3+ax^2+bx+c</math> has real coefficients and three real roots <math>r\ge s\ge t</math>. Show that <math>k=a^2-3b\ge 0</math> and that <ma...")
- 14:49, 15 May 2012 (diff | hist) . . (+527) . . N 1988 USAMO Problems/Problem 1 (Created page with "==Problem== The repeating decimal <math>0.ab\cdots k\overline{pq\cdots u}=\frac mn</math>, where <math>m</math> and <math>n</math> are relatively prime integers, and there is at ...")
- 14:46, 15 May 2012 (diff | hist) . . (0) . . m 1997 PMWC Problems/Problem T4 (→See also)
- 14:46, 15 May 2012 (diff | hist) . . (+586) . . N 1997 PMWC Problems/Problem T4 (Created page with "==Problem== In one morning, a ferry traveled from Hong Kong to Kowloon and another ferry traveled from Kowloon to Hong Kong at a different speed. They started at the same time an...")
- 14:45, 15 May 2012 (diff | hist) . . (+14) . . m 1997 PMWC Problems/Problem T5
- 14:44, 15 May 2012 (diff | hist) . . (+248) . . N 1997 PMWC Problems/Problem T9 (darn this is hard)
- 22:00, 12 May 2012 (diff | hist) . . (+2,550) . . 2000 USAMO Problems/Problem 6 (Credit for this solution goes to Ravi Boppana.)
- 21:49, 12 May 2012 (diff | hist) . . (+201) . . 2000 USAMO Problems (→Problem 6)
- 14:22, 11 May 2012 (diff | hist) . . (+1) . . m 1951 AHSME Problems/Problem 44
- 14:15, 11 May 2012 (diff | hist) . . (+1) . . m 1951 AHSME Problems/Problem 44
- 14:14, 11 May 2012 (diff | hist) . . (+1,019) . . N 1951 AHSME Problems/Problem 44 (Created page with "== Problem == If <math> \frac{xy}{x+y}= a,\frac{xz}{x+z}= b,\frac{yz}{y+z}= c </math>, where <math> a, b, c </math> are other than zero, then <math>x</math> equals: <math> \tex...")
- 06:58, 11 May 2012 (diff | hist) . . (+68) . . 1970 Canadian MO Problems/Problem 1 (+ See Also, and other things that make the page pretty.)
- 10:09, 10 May 2012 (diff | hist) . . (+2,152) . . 1970 Canadian MO Problems (added problems, removed empty tag)
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