Eigenvalues and Eigenvectors - matrixcalc.org
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 ...