The generalized eigenvalue problem is a mathematical framework that extends the standard eigenvalue problem, where we need to solve the equation $$Ax = \lambda Bx$$ for a given pair of matrices A and B. This problem becomes especially relevant when dealing with systems where the matrices are not simply scalars but represent relationships in a more complex manner, such as in structural dynamics or control theory. It often arises in applications where the properties of two coupled systems need to be analyzed simultaneously.
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