Unit II: Least Squares, Determinants and Eigenvalues

Determinant Formulas and Cofactors

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Session Overview

Figure excerpted from 'Introduction to Linear Algebra' by G.S. Strang

One way to compute the determinant is by elimination. In this lecture we derive two related formulas for the determinant using the properties from last lecture.

Session Activities

Lecture Video and Summary

Suggested Reading

  • Read Section 5.2 in the 4th or 5th edition.

Problem Solving Video

Check Yourself

Problems and Solutions

Work the problems on your own and check your answers when you’re done.

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Course Info

Learning Resource Types

theaters Lecture Videos
grading Exams with Solutions
notes Lecture Notes
theaters Recitation Videos
assignment_turned_in Problem Sets with Solutions
laptop_windows Simulations
groups Course Introduction
co_present Instructor Insights