John D. Cook 2/7/2026

Eigenvalue homework problems are backward

Read Original

The article contrasts the academic approach to finding eigenvalues—by computing polynomial roots from a matrix—with real-world numerical methods like the QR algorithm. It highlights that in practice, eigenvalue solvers are used to find polynomial roots via companion matrices, reversing the typical classroom procedure.

Eigenvalue homework problems are backward

Comments

No comments yet

Be the first to share your thoughts!

Browser Extension

Get instant access to AllDevBlogs from your browser

Top of the Week

1
The Beautiful Web
Jens Oliver Meiert 2 votes
2
Container queries are rad AF!
Chris Ferdinandi 2 votes
3
Wagon’s algorithm in Python
John D. Cook 1 votes
5
Top picks — 2026 January
Paweł Grzybek 1 votes
6
In Praise of –dry-run
Henrik Warne 1 votes
8
Vibe coding your first iOS app
William Denniss 1 votes