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INSTRUCTORSCarleen EatonGrant Fraser
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Lecture Comments (6)

1 answer

Last reply by: Dr Carleen Eaton
Tue Nov 18, 2014 4:22 PM

Post by Adnaan Akbarali on November 3, 2014

Dr Carleen You are amazing ! thank you for your time to help us !

3 answers

Last reply by: Dr Carleen Eaton
Mon Nov 7, 2011 8:45 PM

Post by Charles Hassler on October 21, 2010

isn't bc (0*-1)= 0 so wouldn't the determinant in the 2x2 example be 6?

Determinants

  • A determinant is a value associated with a square matrix.
  • Third-order determinants can be evaluated by expanding by minors along any row or column of the associated matrix.
  • These determinants can also be found by calculating products of entries along the diagonals and then adding and subtracting these products.

Determinants

Find the determinant of [
− 2
5
− 3
5
]
  • To find the determinant, |
    a
    b
    c
    d
    | = ad − bc
  • det[
    − 2
    5
    − 3
    5
    ] = |
    − 2
    5
    − 3
    5
    | =
2Find the determinant of
  • To find the determinant,
3Find the determinant of
  • To find the determinant,
4Find the determinant of