Use the formula of Problem 29 to find a 2 x 2 matrix A such that A
Question:
Use the formula of Problem 29 to find a 2 x 2 matrix A such that A ≠ 0 and A ≠ I but such that A2 = A.
Problem 29
where I denotes the 2 x 2 identity matrix. Thus every 2 x 2 matrix A satisfies the equation
Transcribed Image Text:
2 A² = (a + d)A - (ad - bc)I,
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Related Book For
Differential Equations And Linear Algebra
ISBN: 9780134497181
4th Edition
Authors: C. Edwards, David Penney, David Calvis
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