You could call nullspace on the matrix A-lambda.

On Mon, Feb 20, 2017 at 6:57 PM, Gideon Simpson <[email protected]>
wrote:

> I'm trying to do the following:
> 1.  Construct a (small) matrix with a symbolic entry
> 2.  Compute it's eigenvalues/eigenvectors in terms of the symbolic value
> 3.  Evaluate the computed eigenvalues/eigenvectors at a particular
> numerical value
>
> I have no trouble doing task 1 and 2, suing the Matrix structure, but I am
> totally stuck on task 3.
>
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