Q. 15.0( 2 Votes )

Mark the correct A. a unique solution

B. no solution

C. an infinite number of solutions

D. zero solution as the only solution

Answer :

The given system of equations is


x + y + z = 2


3x – y + 2z = 6


3x + y + z = -18


The matrix equation corresponding to this system is :-



Let A =


|A| = = 1(-1-2) -1(3-6) + 1(3+3)


= -3+3+6 = 6


i.e., |A| 0


A unique solution of the system exists.

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