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WAEC Further Mathematics 2009 Question 23

Question 23

Matrices and Determinants

If P = (1 1; 2 1), find (P2 + P)

  1. A.(4 3; 6 1)
  2. B.(4 3; 6 4)
  3. C.(3 2; 6 1)
  4. D.(3 2; 6 4)
Show the answer and explanation

Answer: B ((4 3; 6 4))

Explanation

P2 = (3 2; 4 3). Adding P gives (4 3; 6 4).