invidual work for math

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Across
  1. 1. a matrix with the same number of rows and column
  2. 3. the number you get when you remove the column and row of a designated element in a matrix
  3. 4. matrix derived from the coefficients and constant terms of a system
  4. 7. a scalar value that is a function of the entries of a square matrix
  5. 8. what is a directed straight line segment
  6. 10. the maximum number of linearly independent rows or columns in a matrix
  7. 11. the determinant of the matrix formed after excluding the row and column to which the element belongs
  8. 14. a matrix in which all diagonal element are equal
  9. 15. a square matrix whose determinant is 0
Down
  1. 2. a matrix in which all elements above the main diagonal are zero
  2. 5. a set of number arranged in rows and column so as to form a rectangular array
  3. 6. obtained by dividing the adjugate of the gain matrix by the determinant of the given matrix
  4. 9. a matrix in which the entries outside the main diagonal are all zero
  5. 12. the process of switching the rows and columns of matrix
  6. 13. a square matrix whose elements above or below the main diagonal are zero