Eigenvalues and eigenvectors - Wikipedia
https://en.wikipedia.org/wiki/Eigenvalues_and_eigenvectorsThe calculation of eigenvalues and eigenvectors is a topic where theory, as presented in elementary linear algebra textbooks, is often very far from practice. The classical method is to first find the eigenvalues, and then calculate the eigenvectors for each eigenvalue. It is in several ways poorly suited for non-exact arithmetics such as floating-point. The eigenvalues of a matrix can be determined by finding the roots of the characteristic polynom…
Finding of eigenvalues and eigenvectors
https://matrixcalc.org/en/vectors.htmThis calculator allows to find eigenvalues and eigenvectors using the Characteristic polynomial. Leave extra cells empty to enter non-square matrices. You can use decimal (finite and periodic) fractions: 1/3, 3.14, -1.3 (56), or 1.2e-4; or arithmetic expressions: 2/3+3* (10-4), (1+x)/y^2, 2^0.5 (= 2), 2^ (1/3), 2^n, sin (phi), or cos (3.142rad ...
Computation of Eigenvectors - S.O.S. Math
www.sosmath.com/matrix/eigen2/eigen2.htmlIn this page, we will basically discuss how to find the solutions. Remark. It is quite easy to notice that if X is a vector which satisfies , then the vector Y = c X (for any arbitrary number c) satisfies the same equation, i.e. . In other words, if we know that X is an eigenvector, then cX is also an eigenvector associated to the same eigenvalue.