Single correct · +4 / −1

If A = [1 2; 3 4], then A + Aᵀ is:

  1. (a) [2 5; 5 8]
  2. (b) [1 5; 5 4]
  3. (c) [2 2; 2 8]
  4. (d) [2 5; 2 8]
Answer and solution

Answer (a) [2 5; 5 8]

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