View Single Post
fleeceman10
fleeceman10 is offline
#1
Oct23-10, 03:20 PM
P: 14
1. The problem statement, all variables and given/known data
I think I have broken maths. I am reducing a matrix to row echelon form to find the determinant. The matrix I will show is nearly in the desired form


2. Relevant equations
1 -3 -2 1
0 1 2 -1
0 0 1 -0.8
0 0 1 0


3. The attempt at a solution
As it stands, the determinant is 0.8. However subtracting the 4th row from the 3rd row changes the determinant to -0.8. I thought adding multiples of one row to another left the determinant unchanged. So why hasn't it? Thanks for answers.
Phys.Org News Partner Science news on Phys.org
Simplicity is key to co-operative robots
Chemical vapor deposition used to grow atomic layer materials on top of each other
Earliest ancestor of land herbivores discovered