Or just call the LAPACK routine directly. Matt
On Sat, Dec 24, 2022 at 7:14 AM Stefano Zampini <[email protected]> wrote: > For 3x3 matrices you can use explicit formulas > > On Sat, Dec 24, 2022, 11:20 김성익 <[email protected]> wrote: > >> Hello, >> >> >> I tried to calculate the eigenvalues and eigenvectors in 3 by 3 matrix >> (real and nonsymmetric). >> I already checked the kspcomputeeigenvalues and kspcomputeritz. >> >> However, the target matrix is just 3 by 3 matrix. >> So I need another way to calculate the values and vectors. >> Can anyone recommend other methods that are efficient for such small size >> problems?? >> >> Thanks, >> Hyung Kim >> > -- What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead. -- Norbert Wiener https://www.cse.buffalo.edu/~knepley/ <http://www.cse.buffalo.edu/~knepley/>
