Hi,

I am using the basic eigensolver function to compute the eigenvalues of matrix A and define them in matrix L as follows:

`%Define value of A`

A=input('Enter Values for Matrix "A" in form [a b;x y]:') %Calculate eigenvalues of A

L=eig(A);

As any matrix which could produce complex eigenvalues is not a valid input for this scenario, I would like to be able to display a text string and return the user to a point at which matrix A can be redefined if a complex result is computed.

Any advice on how to do this would be greatly appreciated, this is my first foray into the world of Matlab.

## Best Answer