Solved: PROJECT. Lipschitz Condition. (A) State the

Chapter 1, Problem 1.1.176

(choose chapter or problem)

Lipschitz Condition.

(A) State the definıtion of a Lipschitz condition. Explain its relation to the existence of a partial derivative. Explain its significance in our present context. Illustrate your statements by examples of your own.

(B) Show that for a linear ODE y ‘+ p(x) y = r(x) with continuous p and r in \(\left|x-x_{0}\right| \leqq a\) a Lipschitz condition holds. This is remarkable because it means that for a linear ODE the continuity of f(x, y) guarantees not only the existence but also the uniqueness of the solution of an initial value problem. (Of course, this also follows directly from (4) in Sec. 1.5.)

(C) Discuss the uniqueness of the solution for a few simple ODEs that you can solve by one of the methods considered, and find whether a Lipschitz condition is satisfied.

Text Transcription:

|x - x_0| leqq a

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