MATLAB: Converting values in eigenvector to rational forms that include square roots

eigenvector

I tried computing the eigen vectors and eigen values for a 3×3 matrix, but the result is given in fractions after I used format rational. How can I change the format so as to get values in my matrix that include square root ? (i.e, sqrt(2)/2 )
Here are my codes:
A = [3 1 1 ;1 0 2;1 2 0];
>> [V,D] = eig(A)
V =
0.0000 0.5774 -0.8165
0.7071 -0.5774 -0.4082
-0.7071 -0.5774 -0.4082
D =
-2.0000 0 0
0 1.0000 0
0 0 4.0000

Best Answer

  • Hi,
    you need to use sym command to convert matrix A to a symbolic variable. you can find the examples of sym command usage and the documentation here.
    Hope this helps.