twofish on Nostr: Yes. In linear algebra I mentioned a system of equations where there is only one ...

Yes. In linear algebra I mentioned a system of equations where there is only one right answer represented as a single point. So deeper in the book they mention a 'determinant', which is the 'area' of the right answer. So no longer as single point. Then a little further down, the eigenvector, which is where, unfortunately I get lost in the weeds. 3blue1brown can do circles around me in that regard, but early in the book, in the basics, I built this visual for a problem that transforms the matrix to reveal a different perspective hidden right in front of your face. First we see an 'L' shape, and after we collapse the 3d space into 2d, we get the sum of the two vectors.