Matrices and Determinants

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Across
  1. 3. If the detrminant of a matrix is zero, then it is a____
  2. 5. If A and B are matrices of the same order, then (AB'-BA') is a____
  3. 8. A'A=AA'=I
  4. 9. Diagonal matrix having same elements in principal diagonal
  5. 10. transpose of cofactor matrix
Down
  1. 1. If elements below the principal diagonal are zero then the matrix is known as____
  2. 2. If a matric A is both symmetric and skew-symmetric, then A is a____
  3. 4. If A and B are symmetric matrices of the same order,then AB+BA is a____
  4. 6. value of determinant having two identical rows or columns
  5. 7. condition for matrices to add and subtract