Mattix and Determinant

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Across
  1. 1. What is the difference of the product of the diagonals of a matrix
  2. 4. What is a rectangular array of m x n real numbers arranged in m horizontal rows and n vertical columns
  3. 5. What formula is this: (-1)^i+j•M(ij)?
  4. 6. What is this matrix called if m=n?
  5. 7. You calculate |A| determinant of A square matrix , A { a¹¹=0 a¹²=2 a¹³=1 a²¹=3 a²²=-1 a²³=2 a³¹=4 a³²=-4 a³³=1 }
  6. 8. What is a diagonal matrix if its diagonal terms are equal?
Down
  1. 1. What is this matrix called if only the outer limits of the matrix are 0?
  2. 2. What is it : you change m horizontal rows and n vertical columns
  3. 3. If the upper or lower limits of the main diagonal of a matrix are 0, what matrix is this?
  4. 7. A square Matrix { a¹¹=1 a¹²=0 a²¹=2 a²²=-1} B square Matrix { b¹¹=0 b¹²=2 b²¹=-1 b²²=2} and A+B=C matrix , You calculate C•2 and c²¹=?