A quick trick for computing eigenvalues | Essence of linear algebra, chapter 15
How to write the eigenvalues of a 2x2 matrix just by looking at it.
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Introduction to eigenvectors and eigenvalues:
https://youtu.be/PFDu9oVAE-g
Lockdown math lecture talking about the mean product formula:
https://youtu.be/MHXO86wKeDY
Timestamps:
0:00 - Background
4:53 - Examples
10:24 - Relation to the characteristic polynomial
12:00 - Last thoughts
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3Blue1Brown
3blue1brown, by Grant Sanderson, is some combination of math and entertainment, depending on your disposition. The goal is for explanations to be driven by animations and for difficult problems to be made simple with changes in perspective. Contact and F...