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# Determinants and Inverses of 2X2 Matrices

Determinants and Inverses of 2X2 Matrices. Determinants Of 2x2 Matrices. Determinants. Every square matrix has a determinant A number that is found by using a formula…. Determinant of a 2 x 2 Matrix. d. b. a. c. -. Example 1. Determinant of a 2 x 2 Matrix. 3. 6. 4. 5. -. -2.

## Determinants and Inverses of 2X2 Matrices

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1. Determinants and Inverses of2X2 Matrices

2. Determinants Of 2x2 Matrices

3. Determinants • Every square matrix has a determinant • A number that is found by using a formula…

4. Determinant of a 2 x 2 Matrix d b a c -

5. Example 1

6. Determinant of a 2 x 2 Matrix 3 6 4 5 - -2 =

7. Example 2

8. Determinant of a 2 x 2 Matrix -4 2 5 3 - -23 =

9. Example 3

10. Determinant of a 2 x 2 Matrix 8 5 6 -4 - 64 =

11. Practice: • Page 37 • #1 & 2

12. Inverses Of 2x2 Matrices

13. The Inverse of a 2x2 matrix: • If • The inverse of A is:

14. Example 4

15. INVERSE The Inverse of a 2x2 Matrix

16. Example 5

17. INVERSE The Inverse of a 2x2 Matrix

18. Practice: • Pages 29-30 • Copy problem • #1-10

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