Show that x(t) is a solution of the IVP x' = f(x), x(0) = xo if and only if it satisfies the integral equation %3D x(t) = x0 + f(x(s)) ds.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Show that x(t) is a solution of the IVP x' = f(x), x(0) = x0 if and only
if it satisfies the integral equation
= Xo + f(x(s)) ds.
Consider the sequence of functions as defined in the proof of the Existence
and Uniqueness Theorem, i.e., Xo(t) = xo
Xn+1(t) = xo +
I f(xn(s)) ds, n = 0, 1, ....
Show that if Xn(t) is defined, continuous and belongs to the compact
set D for all t e [-a, a] and f e C'(D), then xn+1(t) is defined and
continuous for all t E -a, a].
Transcribed Image Text:Show that x(t) is a solution of the IVP x' = f(x), x(0) = x0 if and only if it satisfies the integral equation = Xo + f(x(s)) ds. Consider the sequence of functions as defined in the proof of the Existence and Uniqueness Theorem, i.e., Xo(t) = xo Xn+1(t) = xo + I f(xn(s)) ds, n = 0, 1, .... Show that if Xn(t) is defined, continuous and belongs to the compact set D for all t e [-a, a] and f e C'(D), then xn+1(t) is defined and continuous for all t E -a, a].
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