Solve the following systems of homogeneous linear equations by matrix method:

x + y – z = 0
x – 2y + z = 0
3x + 6y – 5z = 0

Matching exercise

    
Match the items on the right to the items on the left.
Step 1
Step 2
Step 3
Step 4
Step 5
Step 6
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Now, |A| = 1(4) – 1(– 8) – 1(12) = 0
Hence, the system has infinite solutions
Let z = k, X + y = k, x – 2y = – k
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s6.PNG