Solving a matrices equation

Hi,

If I have an equation

det(-c^2*[m]+[k])=0

where [m] and [k] are both known 6x6 matrices

How would I solve this problem in MATLAB?

thanks

[Tom]

Just to add - c is the unknown

Answer 1

[John D'Errico]

A simple generalized eigenvalue problem, and thus solved directly by eig.