As the title says, I'm trying to help a friend by explaining some problems, But a certain problem but i am just stuck on a point where it mentions "i" is the index of a particular column in a 4x4 matrix.
I cannot move on untill I know what they are refering to by index of a column .
Exact Line: "Let i be the index of the first column of M without a pivot"
Can some one point out what the index of a column is? for example [ 0 1 4 7] if that is a matrix,
..................................................................................................[ 3 5 8 1]
say index of column 3, is it (3,1) and (3,2) or is it 4 and 8 or what exactly?
I cannot move on untill I know what they are refering to by index of a column .
Exact Line: "Let i be the index of the first column of M without a pivot"
Can some one point out what the index of a column is? for example [ 0 1 4 7] if that is a matrix,
..................................................................................................[ 3 5 8 1]
say index of column 3, is it (3,1) and (3,2) or is it 4 and 8 or what exactly?