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Solving Linear System of Equations by Matrix Method

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Use Row Reduction and Back Substitution to solve the given Linear System of Equations. Write the Augmented Matrix for each of them.

[Please refer to the attachment for the given linear system of equations].

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Augmented Matrix:
[├ ■(1&3@1&1)┤| ■(0@4)]
Row Reduction:
[├ ■(1&3@1&1)┤| ■(0@4)]→[├ ■(1&3@0&-2)┤| ■(0@4)] [R_2→R_2-R_1]

[├ ■(1&3@0&-2)┤| ■(0@4)] →[├ ■(1&3@0&1)┤| ■(0@-2)] [R_2→-〖1/2 R〗_2]

We have brought the Matrix to Row-Echelon form.
The corresponding system is given as
x_2=-2
x_1+3x_2=0
Or,x_1=(-3)×(-2)=6

Augmented Matrix:
[├ ■(1&3@3&1)┤| ■(2@6)]
Row Reduction:
[├ ■(1&3@3&1)┤| ■(2@6)]→[├ ■(1&3@0&-8)┤| ■(2@0)] [R_2→R_2-〖3R〗_1]

[├ ...

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  • MSc, Indian Institute of Technology - Roorkee (I.I.T.-ROORKEE)
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