Geometric visualization of spectral decomposition showing the transformation of a unit circle into an ellipse with orthogonal eigenvectors $\mathbf{q}_1$ and $\mathbf{q}_2$.
Linear Algebra

The Spectral Decomposition of Symmetric Matrices: A Complete Guide

Master Spectral Decomposition. Learn how symmetric matrices are diagonalized into orthogonal eigenvectors and eigenvalues with clear geometric intuition.