Introduction to determinants.

1. 8.4: The Determinant
Objective: Find the determinant of a
square matrix.
Standard: Linear Algebra 10.0

2. What's a "Determinant"?

3. Ex. 1) Find the determinant of the matrix.

4. Determinant of a 3x3 Matrix
Minors and Cofactors
1) +/- matrix
2) Expand a row
OR column
3) Evaluate

5. Ex. 2) Find the determinant.

6. Determinant of a 3x3 Matrix
Plan B 1) Copy Columns 1
and 2
2) Sums of major
and minor diagonals
3) Find the
difference

7. Ex 3) Find the determinant.

8. Ex 4) Find the determinant. Option 1:
Option 2:

9. Assignment:
#13 p. 616 #11, 14, 27,
38, 39, 44, 57