ericasolis56451 ericasolis56451

11-03-2024
Mathematics

contestada

Let M be a 3 × 3 invertible matrix with real entries and let I denote the 3 × matrix. If M⁻¹ adj(adjM). Then which of the following statements, is/are ALWAYS TRUE ?
A. M = I
B. det M = 1
C. M² = I
D. (adj M)² = I

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