Show that the system of equations
2x + y + z = -6a
2x + y + (b +1)z = 4
bx + 3y + 2z = 2a
Has a unique solution except when b = 0 and b = 6.
If b = 0, show that there is only one value for a for which a solution exists, and find the general solution in this case.
Discuss the case when b = 6.
Let A = (2 1 1) (x) (-6a)
(2 1 b+1), X = (y), B = (4)
(b 3 2) ...
This shows how to prove that the given system has a unique solution except for certain points in an attached Word document.