Finding Determinant

1. March 09, 2012
8.4: The Determinant
Objective: Find the determinant of a
square matrix.
Standard: Linear Algebra 10.0
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2. March 09, 2012
What's a "Determinant"?
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3. March 09, 2012
Ex. 1﴿ Find the determinant of the matrix.
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4. March 09, 2012
Determinant of a 3x3 Matrix
Minors and Cofactors
1﴿ +/­ matrix
2﴿ Expand a row
OR column
3﴿ Evaluate
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5. March 09, 2012
Ex. 2﴿ Find the determinant.
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6. March 09, 2012
Determinant of a 3x3 Matrix
Plan B 1﴿ Copy Columns 1
and 2
2﴿ Sums of major
and minor diagonals
3﴿ Find the
difference
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7. March 09, 2012
Ex 3﴿ Find the determinant.
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8. March 09, 2012
Ex 4﴿ Find the determinant. Option 1:
Option 2:
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9. March 09, 2012
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10. March 09, 2012
Assignment:
8.4 p. 616 #11, 14, 27, 38, 39,
44, 45
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