In Exercises 27–28 , show that the matrices A and B are row equivalent by finding a sequence of elementary row operations that produces B from A, and then use that result to find a matrix C such that CA = B. A = [ 1 2 3 1 4 1 2 1 9 ] , B = [ 1 0 5 0 2 − 2 1 1 4 ]
In Exercises 27–28 , show that the matrices A and B are row equivalent by finding a sequence of elementary row operations that produces B from A, and then use that result to find a matrix C such that CA = B. A = [ 1 2 3 1 4 1 2 1 9 ] , B = [ 1 0 5 0 2 − 2 1 1 4 ]
In Exercises 27–28, show that the matrices A and B are row equivalent by finding a sequence of elementary row operations that produces B from A, and then use that result to find a matrix C such that CA = B.
In Exercises 29–32, find the elementary row operation that trans-
forms the first matrix into the second, and then find the reverse
row operation that transforms the second matrix into the first.
Determine which of the matrices in Exercises 1–6 are symmetric.
3.
Find the inverses of the matrices in Exercises 1–4.
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