- #1
TheColorCute
- 22
- 0
My questions is short and to the point: What exactly is a free variable (in a matrix, for example).
How do you know if a variable is free?
Here's a matrix that (apparently) has a free variable:
[1 4 -3 0 0]
[-2 -7 5 1 0 ]
[-4 -5 7 5 0 ]
Row reducing the matrix we end up with:
[1 4 -3 0 0 ]
[0 1 -1 1 0 ]
[0 0 6 -6 0 ]
Apparently this matrix has a variable. Where is it and how do I know that it's free?
Thanks! :)
How do you know if a variable is free?
Here's a matrix that (apparently) has a free variable:
[1 4 -3 0 0]
[-2 -7 5 1 0 ]
[-4 -5 7 5 0 ]
Row reducing the matrix we end up with:
[1 4 -3 0 0 ]
[0 1 -1 1 0 ]
[0 0 6 -6 0 ]
Apparently this matrix has a variable. Where is it and how do I know that it's free?
Thanks! :)