In Example 5, in A change 2 to 2 and 3 to 3, in B change 2
Question:
In Example 5, in A change −2 to 2 and −3 to 3, in B change 2 to −2 and 3 to −3, and then do the multiplications.
Data from Example 5
For the given matrices A and B, show that AB = BA = I, and therefore that B = A−1.
Forming the products AB and BA, we have the following:
Since AB = I and BA = I, B = A−1 and A = B−1.
Transcribed Image Text:
A = [ 1 -2 3 7 1 B | }] 73 2 1
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Related Book For
Basic Technical Mathematics
ISBN: 9780137529896
12th Edition
Authors: Allyn J. Washington, Richard Evans
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