Verify that V = x14+ 2x22+2x1x2 + x12 is a Lyapunov function for the system described by the following state  equations dx1/dt = x2 dx2/dt= -x2 - x13. Then, check the stability of the system.

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter5: Systems Of Equations And Inequalities
Section: Chapter Questions
Problem 5CC
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Verify that

V = x14+ 2x22+2x1x2 + x12

is a Lyapunov function for the system described by the following state 
equations

dx1/dt = x2
dx2/dt= -x2 - x13.

Then, check the stability of the system.

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