The text book for this assignment is available as pdf in google. The text book is Differential Equat

The text book for this assignment is available as pdf in
google. The text book is Differential Equations and Dynamical Systems, Lawrence
Perko , 3^rd edition, spring 2011.

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1. The general form of a Lienard system is ( ) dx y f x dt dy x dt = – = – If f (x) = µ(x3 – x) , this is the system form of Van der Pol’s equation. Find all the equilibria of the Van der Pol equation and characterize them as sources, sinks, etc. Make sure to analyze the influence of µ on the characterization. ________________________________ For more information on this application: Frequency demultiplication, Van der Pol, B. and van der Mark, Nature, 120, 363-364, (1927). A Lienard Oscillator Resonant Tunnelling Diode-Laser Diode Hybrid Integrated Circuit: Model and Experiment,, Slight, T.J.; Romeira, B.; Liquan Wang; Figueiredo, J.M.L.; Wasige, E.; Ironside, C.N. .; IEEE J. Quantum Electronics, Volume 44, Issue 12, Dec. 2008 Page(s):1158 – 1163.
2. Komarova and co-workers* have devised a simple 2-D dynamical system model of cell dynamics in bone remodeling. The equations associated with their model are: 11 21 12 22 1 1 1 2 1 1 2 2 1 2 2 2 g g g g dx x x x dt dx x x x dt a b a b = – = – Here, we’re interested only in positive values of x1 and x2 , b1 > 0 and 2 b > 0 , and the parameters ij g may take on any real values. Find all equilibria (again, we’re only interested in the first quadrant) of the system. Identify degenerate cases. Find values of the parameters for which at least one of the equilibria is a source, other values for which at least one is a sink, others for which at least one is a saddle, others that yield a center, others that yield a stable focus, and others that yield an unstable focus. Sketch a phase diagram corresponding to each of these cases. Try to make some general statements about the structure of equilibrium as a function of the parameters. ________________________________ * Mathematical model predicts a critical role for osteoclast autocrine regulation in the control of bone remodeling, S. V. Komarova, R. J. Smith, S. J. Dixon, S. M. Sims, L. M. Wahl, Bone 2003;33:206-215.
3. The planar dynamical system 3 ‘ 1 ‘ 2 x y y x x == -…

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