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Unformatted text preview: Therefore, it is a proper node (star point), and it is unstable. (b) + + =t t t e C t t t e C t x t t 5 cos 2 5 sin 5 cos 5 sin 2 5 sin 5 cos ) ( 4 2 4 1 (c) It is a spiral point ; asymptotically stable. (d) It is a saddle point ; unstable....
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This note was uploaded on 07/23/2008 for the course MATH 251 taught by Professor Chezhongyuan during the Spring '08 term at Pennsylvania State University, University Park.
 Spring '08
 CHEZHONGYUAN
 Math, Differential Equations, Equations, Partial Differential Equations

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