Multiple choice

The product of matrices (PQ)–1 and P is

  1. P–1

  2. Q–1

  3. P–1 Q–1

  4. PQP–1
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B Correct answer
Explanation

The expression (PQ)^-1 * P is equal to (Q^-1 * P^-1) * P. Since P^-1 * P = I (the identity matrix), the expression simplifies to Q^-1 * I = Q^-1.

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