MATLAB: What command should i use to have real part of the eigenvalues of the matrix in symbolic form

a precise answer in variable form that include 'm' and 'n'

clear all
m=sym('m')
n=sym('n')
A=[0 1 1/sqrt(3*n*m); 2 4 2/sqrt(3*n*m); 3 4 5/sqrt(3*n*m)]
eig(A)
I need to find the eigenvalues of this matrix but i just want a precise answer of variables 'n' and 'm' in real form, its not working, what should i do?

Best Answer

Use the sym command when defining the matrix
m=sym('m')
n=sym('n')
 A=sym([0 1 1/sqrt(3*n*m); 2 4 2/sqrt(3*n*m); 3 4 5/sqrt(3*n*m)])
eig(A)
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