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Solve the System of Equations by Using the Inverse of the Coefficient

Question 4

Multiple Choice

Solve the system of equations by using the inverse of the coefficient matrix.
- xy+3z=52x+z=1x+4y+z=7\begin{array}{l}x-y+3 z=5 \\2 x+z=1 \\x+4 y+z=-7\end{array}


A) (1,2,0) (1,-2,0)
B) (1,0,2) (1,0,-2)
C) (0,2,1) (0,-2,1)
D) No inverse, no solution for system

Correct Answer:

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