Hi, How do we get the Eigenvalues of a particular Matrix?
matrix = {{1, 0, 7, 0}, {0, 1, 2, 0}, {1, 1, 2, (4 - 1)}, {0, 1, a,
3}};
matrix // MatrixForm
eig = Eigenvalues[matrix];
N[eig]
This is a simple example, and I have a more complex symbolic matrix. However, i am not able to get 4 eigenvalues for this simple matrix above.
My output looks like this
{1, Root[15 + 3 a + (2 - 3 a) #1 - 6 #1^2 + #1^3 &, 1],
Root[15 + 3 a + (2 - 3 a) #1 - 6 #1^2 + #1^3 &, 2],
Root[15 + 3 a + (2 - 3 a) #1 - 6 #1^2 + #1^3 &, 3]}
I do not understand the #1 terms. Any help is appreciated. Thank you all.
