evaluating locally linear systems (stability, type, phase portrait)

Descripción

We want to solve x' = Ax. If detA =/= 0, then the origin is the only critical point. The following are different classifications of the zero vector for type and stability with corresponding phase portraits.
Georgie D'Sanson
Fichas por Georgie D'Sanson, actualizado hace más de 1 año
Georgie D'Sanson
Creado por Georgie D'Sanson hace alrededor de 5 años
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Resumen del Recurso

Pregunta Respuesta
r1 < 0 < r2 (real and distinct eigenvalues r1, r2)
0 < r1 < r2 (real and distinct eigenvalues r1, r2) nodal source
r1 < r2 < 0 (real and distinct eigenvalues r1, r2) nodal sink
λ = 0 (r1,r2 are complex conjugates r1 = λ + iμ)
λ > 0 (r1,r2 are complex conjugates r1 = λ + iμ) spiral source
λ < 0 (r1,r2 are complex conjugates r1 = λ + iμ) spiral sink
r > 0 (r1 = r2, 1 linearly independent eigenvector) (source)
r < 0 (r1 = r2, 1 linearly independent eigenvector) (sink)
r > 0 (r1 = r2, 2 linearly independent eigenvectors) star node (source) unstable
r < 0 (r1 = r2, 2 linearly independent eigenvectors) star node (sink) asymptotically stable
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