On Oct 5, 5:43 pm, Paul <[email protected]> wrote: > sage: mat1 = Matrix(4,4,[[-e^-((1/2)*a*k),0,sin(-(1/2)*a*l),cos(-(1/2) > *a*l)],[0,e^(-(1/2)*a*k),-sin((1/2)*a*l),-cos((1/2)*a*l)],[-k*e^-((1/2) > *a*k),0,l*cos(-(1/2)*a*l),-l*sin(-(1/2)*a*l)],[0,k*e^(-(1/2)*a*k),l*cos > ((1/2)*a*l),-l*sin((1/2)*a*l)]])
Sage used to call Maxima to compute eigenvalues, maybe it still does. I think Maxima can find the eigenvalues for the above matrix, but it's a huge mess and it takes a long time. Maybe you can substitute a symbol for exp(a*k/2) etc or something like that to make it less messy. Just a guess. FWIW Robert Dodier --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
