1.

The system of linear equationsx + y + z = 22x + 3y + 2z = 52x + 3y + (a2 – 1)z = a + 1

A. is inconsistent when a = 4
B. has a unique solution for \(\left| {\rm{a}} \right| = \sqrt 3\)
C. has infinitely many solutions for a = 4
D. is inconsistent when \(\left| {\rm{a}} \right| = \sqrt 3\)
Answer» E.


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