Matrices crossword puzzle by Emmanuel

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Across
  1. 4. A rectangular array of numbers or variables that represents a set of linear equations
  2. 5. A square matrix that is equal to its transpose
  3. 7. A matrix with only one row
  4. 8. A matrix that is the result of multiplying every element of a given matrix by a constant
  5. 9. The method of interchanging the rows and columns of a given matrix
  6. 10. A matrix with only one column
Down
  1. 1. The diagonal entries of a square matrix
  2. 2. A matrix in which all the entries are zero
  3. 3. A square matrix in which all the elements of the principal diagonal are ones and all other elements are zeros
  4. 6. A matrix in which the number of rows equals the number of columns