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Let R be a square matrix. Consider the following two statements: A) if R2 = I then R = I or R= -I %3D

Let R be a square matrix. Consider the following two statements: A) if R2 = I then R = I or R= -I %3D B) if R2 = I then det(R) = 1 or det(R): = -1 Which of them is true (for all possible R RI' tabindex="0">RR)?

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