Question
Asked Jan 27, 2020
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The numerical equation a2 = 1 has exactly two solutions.
Find at least eight solutions of the matrix equation A2 = I3.
[Hint: Look for solutions in which all entries off the main
diagonal are zero.]

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Expert Answer

Step 1

The 2 obvious solution for the A2 = I3 are A = I3 and A = – I3

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Matrices

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