Search Me

Recent Posts
 We’ve Got Snowball Problems
 Happy New Year 2015!
 Girls’ Angle Bulletin, Volume 8, Number 2
 Go Digital! A Crossword Puzzle Raffle
 Girls’ Angle Bulletin, Volume 8, Number 1
 Multiplication Sculptures and Sums of Cubes
 Girls’ Angle Bulletin, Volume 7, Number 6
 Marion Walter’s Theorem Via Mass Points
 Girls’ Angle Bulletin, Volume 7, Number 5
 Cubes in onepoint perspective
 Girls’ Angle Bulletin, Volume 7, Number 4
 Girls’ Angle Bulletin, Volume 7, Number 3
Categories
 applied math (3)
 Contest Math (23)
 gender issues (9)
 math (89)
 Math Education (74)
 Uncategorized (13)
 WIM videos (4)
Archives
 February 2015 (1)
 January 2015 (1)
 December 2014 (2)
 October 2014 (1)
 September 2014 (1)
 August 2014 (1)
 July 2014 (1)
 June 2014 (2)
 May 2014 (1)
 February 2014 (1)
 January 2014 (4)
 December 2013 (1)
 November 2013 (2)
 September 2013 (2)
 August 2013 (1)
 July 2013 (2)
 June 2013 (1)
 May 2013 (1)
 April 2013 (3)
 March 2013 (1)
 February 2013 (2)
 January 2013 (2)
 December 2012 (2)
 November 2012 (2)
 October 2012 (3)
 September 2012 (8)
 August 2012 (10)
 July 2012 (7)
 June 2012 (3)
 May 2012 (3)
 April 2012 (7)
 March 2012 (4)
 February 2012 (3)
 December 2011 (4)
 November 2011 (7)
 October 2011 (11)
 September 2011 (13)
 August 2011 (16)
Everything Math
AIME angles arctangent area calculus CEO chocolate circles Coach Barb combinatorics complex numbers computation conformal crossword cubes dates distance divisibility Emily Riehl errors exponentials Fermat's little theorem geometry Girls' Angle Girls' Angle Bulletin girls and math infinite geometric series Jean Pedersen Julia Zimmerman Kate Jenkins learning linear algebra mass points math math contests Math Doctor Bob mathematicians math event math magazine math prize for girls math problems math trivia math videos matrices mental computation multiplication optimization origami parabolas perpendicular perspective drawing puzzle Pythagorean theorem Pythagorean triples quadratic Radmila Sazdanovic raffle contest roots science secret messages similarity sine stable marriage algorithm stable marriage problem stereographic projection sumit sums of powers tennis triangles trigonometry USWIM variables Vieta's formulas volume Women's History Month
Tag Archives: linear algebra
An Amusing Determinant
A student and I were playing with determinants recently and we stumbled upon an amusing one. I have a very strong feeling that this must have been stumbled upon many times in the past so we’re making no claim to … Continue reading
Posted in math
Tagged binomial coefficients, determinants, linear algebra, matrices, Pascal's triangle
3 Comments
2012 AIME 1 Problem #12
I was checking out Mess or Math?’s cool blog and her latest post wonders whether problem 12 on the 2012 AIME 1 has a simple solution. Simple is a subjective term. The problem’s setup certainly suggests invoking things like the … Continue reading