Very confused on how to get the inside variables
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The following linear system has [[12], [11], [4]] matrix of constants,
x + y + z = 12
x - y = 11
x - y + z = 4
(Option D)
Verification of the Choice:
The given linear system is,
x + y + z = 12
x - y = 11
x - y + z = 4
This can be written in the form of matrix as follows,
=
Hence, option D is the correct linear system as it contains the desired matrix.
About the Other Options:
The RHS matrix in option A would be,
which is not the desired matrix.
Similarly, the linear systems in the options B and C contain the matrix and the matrix
on the RHS of the equality, which are not desired.
Thus, option D is correct.
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