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Exercise 2

Avg difficulty 2.5

Use the commands power, inverse_power, and find_closest_eigenvalue to approximate the eigenvalues and associated eigenvectors of the following matrices.

  1. A=[−2−2−8−2]A= \left[\begin{array}{rr} -2 & -2 \\ -8 & -2 \\ \end{array}\right].

  2. A=[0.60.70.50.2]A= \left[\begin{array}{rr} 0.6 & 0.7 \\ 0.5 & 0.2 \\ \end{array}\right].

  3. A=[1.9−16.0−13.027.0−2.420.34.6−17.7−0.51−11.7−1.413.1−2.115.36.9−20.5]A= \left[\begin{array}{rrrr} 1.9 & -16.0 & -13.0 & 27.0 \\ -2.4 & 20.3 & 4.6 & -17.7 \\ -0.51 & -11.7 & -1.4 & 13.1 \\ -2.1 & 15.3 & 6.9 & -20.5 \\ \end{array}\right].

Austin, Understanding Linear Algebra, §5.2 Finding eigenvectors numerically, Exercise 2

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Adapted from Understanding Linear Algebra © 2023 David Austin. Licensed under CC BY 4.0. Source: Understanding Linear Algebra. Imported at revision 3e6dced.