Matrices

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Across
  1. 3. An m×n matrix is a rectangular array of real numbers arranged in m horizontal rows and n verticial columbs.What is this?
  2. 5. A diagonal matrix,for which all terms on the main diagonal are equal.What is this?
Down
  1. 1. In which matrix is ​​the number of rows and columns equal?
  2. 2. A=[aj] which every time of the main diagonal is zero,that is aj=0 for i≠j.What is this?
  3. 4. Aᵗ=[ajᵗ]