Eigenvalues and Eigenvectors

Find $\lambda$ and $v$ with $Av = \lambda v$ — used in vibration, stability and PCA.

Intermediate

w, v = np.linalg.eig(A)        # general matrices
w, v = np.linalg.eigh(S)       # symmetric: faster, real results

A control system is stable when all eigenvalues of its state matrix have negative real parts.

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