Chapter 6 Eigenvalues and Eigenvectors
For other matrices we use determinants and linear algebra. This is the key calculation in the chapter—almost every application starts by solving Ax = λx. First move λx to the left side. Write the equation Ax = λx as (A −λI)x = 0. The matrix A −λI times the eigenvector x is the zero vector. The eigenvectors make up the nullspace of A ...
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