Again, please show what you have done and where you hit a snag.
Suppose e, f e(included in) R and consider the linear system in x, y and z:
3x- 2y+ez= f
x + z = -1
2x + y + z = -1
(You must justify all your answers.)
a) If[A|b]is the augmented matrix of the system above,find rankA and rank[A|b]for all values of e and f.