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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.

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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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