[ Mathematics ] Open Question : 10 POINTS, quick easy matrix question?
1 -1 -1 4
0 1 -2 0
0 0 (k-3) 2
consider the matrix above where the 1st 3 columns correspond to the variables x1, x2, x3, respectively.
-consistent with a unique solution;
- consistent with infinitely many solutions.
i know the answer to the first one
how do i do the rest?
Source: http://answers.yahoo.com/question/index?qid=20110512035903AAZh6OU