A linear system AX=B
A= [1 2 3]
[4 5 6]
[7 c 9]
B= [1]
[2]
[b]
1) For what value of c are there no or infinitely many solutions?
2) For what value of b are there infinitely many solutions and what are they?
I know that ‘c’ is obviously 8 but I can’t figure out how to compute AX=B to obtain values of c and b. I even know that if c=8, there are infinitely many solutions. Please help me as I have been doing this for the past 2 days.