Topic: linear algebra list of topics
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5 items are filed under this topic.

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	Finding the Line Joining Perpendicular Feet		2009-07-16
		From mukulu: Please help I've been tryng to search in your data but i failed to get the solution Find the equation of a straight line joining the feet of the perpendiculars drawn from the point A(1,1) to the line 3x-3y-4= 0 and 3x+y-6=0. Answered by Janice Cotcher.
	Dividing money unequally		2007-02-06
		From Linda: I have a total of $13,826.48. It is to be divided by 15 kids - 2 of the kids only get half of what the other 13 do - how much do the 13 get and how much does the 2 get? Thanks Answered by Haley Ess and Steve La Rocque.
	Nickels, dimes and quarters		2007-02-05
		From Avinash: Mary has 48 coins made up of nickels, dimes and quarters with a total value of $5.10. She has 4 more dimes than nickels and quarters combined. How many coins of each kind does she have? Use matrix to solve the system Answered by Stephen La Rocque.
	If the matrix A is inverible and AB =AC, then B = C		2002-03-27
		From Vikki: i hope you can help i am soooo stuck here goes: a) A= 0 1 B= 1 1 c= 2 5 0 2 3 4 3 4 A,B and c are matrices Evaluate AB and Ac (which I can do) then b) I need to prove that if the matrix A is inverible and AB =AC, then B = C. Why does this not contradict what happened in part a)? Answered by Leeanne Boehm.
	Espaces vectoriels		2002-08-18
		From Bacar: Comment montrer que trois (ou plus que trois) sous espaces vectoriels sont en somme directe. Answered by Claude Tardif.

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