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how to get eigenvalues and plot it

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PetronasAMG on 4 Oct 2021
Answered: J Chen on 4 Oct 2021
say time is varying from 1< t < 10
I also set the element of matrix
a1 = t/1, a2 = t +2 / 3 ,a3 = t/2 ,a4 = t+5
then i set up the matrix
t = 1:0.5:10;
a1 = t./1; a2 = t+2/3; a3 = t./2; a4 = t+5;
A = [0 0 1 0;-a1 -a2 -a4 0;1 1 1 1;-a3 -a2 0 0];
B = eig(A);
%I need to plot real part of eigenvaluse as real eigen vs t plot
So something is definatly missing in my code here. After building a A matrix, I get an error. How would I be able to get valuse of each eigenvalues from each time interval, also be able to pull out those corresponding eigenvlause and plot it as eigenvaluse vs t?
using vertcat Dimensions of arrays being concatenated are not consistent
not sure what that means. Please help!

Accepted Answer

J Chen
J Chen on 4 Oct 2021
Use a loop to calculate and store the eigenvalues for each time point. Plot the data outside the loop.

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