Determinant Formulas and Cofactors
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Lesson Description:
Determinant Formulas and Cofactors -- Lecture 19. Learn some determinant formulas and how to compute determinants of matrices. Also, learn how to use cofactors to compute determinants.
Gilbert Strang, 18.06 Linear Algebra, Spring 2005. (Massachusetts Institute of Technology: MIT OpenCourseWare), http://ocw.mit.edu (Accessed November 22, 2008). License: Creative Commons BY-NC-SA.
More info at: http://ocw.mit.edu/terms
Additional Resources:
- Determinant Java Applet - Java applet to play around to investigate determinants.
Questions answered by this video:
- What is the formula for a determinant?
- What is a cofactor?
- What is det A?
- What are tridiagonal matrices?
- How do you use cofactors to find a determinant?
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Staff Review
This video is a complete lecture on finding determinants and formulas for determinants using cofactors. Some of the formulas get very complex and messy. A must-watch for determinants computation.
