2. A systematic approach of the
elimination method for solving a
system of linear equations provides
another method of solution that
involves a simplified notation.
3 ways in finding determinants:
Criss-cross multiplication
Row
Column
11. Remember:
• The first thing we should do is to identify the
correct determinant and finding the inverse
and identity of the matrix given was done in
order to prove whether the determinant used
wasn’t wrong.
23. Tip in finding the error:
If the determinant you’ve found using
criss-cross multiplication in matrix
given is correct, the error in row and
column was found in the middle row
and column but if the determinant
you’ve found using criss-cross
multiplication in the given matrix is the
error, the error in row and column was
found in the first and last row and
column.
•