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Question

Question: If a square matrix A is involutory then A<sup>2n+1</sup> =...

If a square matrix A is involutory then A2n+1 =

A

I

B

A

C

A2

D

(2n+1)A

Answer

A

Explanation

Solution

A2n+1 = (A2)n. A = I. A = A