Monthly Archives: November 2012

Wed Nov 21 Update & Next HW assignement

We reviewed the cofactor expansion for computing determinants (Sec 3.1), and pointed out the special case for triangular matrices. We also talked through exercises 19-24, which indicate how the elementary row operations affect the value of the determinant. That led … Continue reading

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Khan Academy: Linear Algebra

You may find the Khan Academy’s Linear Algebra videos helpful.  Here is the video for the topic we discussed in class on Monday: “Finding the determinant of a 3×3 matrix” See also the videos for nxn determinants, and for computing … Continue reading

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