For two conformable square matrices and , which of the following expressions is always identical to ?

Answer and explanation

Correct answer: D.

  1. Step 1: The reversal law of transposition states that the transpose of a product of matrices is the product of their transposes taken in reverse order.
  2. Step 2: .
Answer
.
Why not the others: ignores the reversal order required by matrix multiplication; and the mixed forms omit transposition of one factor.

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