I need the eigenvalues of this matrix as a function of Ny. When I tried whith a simpler matrix (4 x 4), it worked, but now, with this 25 x 25 matrix it returns what is shown in picture bellow:
The simpler case is:
MC={{2207.91 - 46027. Ny, 0, 0, 0}, {0, 3437.27 - 41761.9 Ny, 0, 0}, {0,
0, 31086.5 - 104682. Ny, 0}, {0, 0, 0, 35326.6 - 91922.4 Ny}}
EV[Ny_] = Eigenvalues[MC]
The output is:
{{2207.91 - 46027. Ny, 0, 0, 0}, {0, 3437.27 - 41761.9 Ny, 0, 0}, {0,
0, 31086.5 - 104682. Ny, 0}, {0, 0, 0, 35326.6 - 91922.4 Ny}}
{31086.5 - 104682. Ny, 35326.6 - 91922.4 Ny, 2207.91 - 46027. Ny,
3437.27 - 41761.9 Ny}
In this case, the eigenvalues are simply functions of Ny, as they should be, but in the other case, where I have the 25 x 25 matrix, I get these root expressions.
What I'm doing wrong? How can i solve this problem?
Rootobjects a point of concern? – Daniel Lichtblau Mar 20 '20 at 00:38