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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https://github.com/ManimCommunity/manim/
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