[Introduction to Quantum Mechanics] Eigenvalues are real despite being a complex matrix? Diagonalizing a Hermitian matrix

In quantum mechanics, observables such as energy and momentum are represented by operators.In finite-dimensional matrix ...
TES

Eigenvalues and Eigenvectors (A-Level Further Maths)

To understand what is meant by ‘eigenvalues’ and ‘eigenvectors’. To understand how to find the ‘characteristic equation’. To be able to find eigenvalues and eigenvectors for given 2x2 and 3x3 matrices ...