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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 textbook.

Problem Solving Video

  • Watch the recitation video on Determinants (00:12:48)
  • Recitation video transcript (PDF)
  • 观看视频: 习题讲解 -- 行列式 (00:12:08) [watch this recitation in Mandarin]

Check Yourself

Problems and Solutions

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

 

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