Theorem Let fbe a continuous function on an open subset U of a anach space X into a Banach space Y. Let a and b by any distinct points in U such hat the segment [a, b] is contained in U and f be differentiable at each point of a, b]. Let g be any continuous linear function on X into Y. Then 11 f(h)-f(a). a (h alls all h all

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter3: Functions
Section3.3: More On Functions; Piecewise-defined Functions
Problem 99E: Determine if the statemment is true or false. If the statement is false, then correct it and make it...
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Theorem
Let f be a continuous function on an open subset U of a
Banach space X into a Banach space Y. Let a and b by any distinct points in U such
that the segment [a, b] is contained in U and f be differentiable at each point of
[a, b]. Let g be any continuous linear function on X into Y. Then
|| ƒ (b)-f(a) - g (b-a) || ≤c|| b-all,
where c is a real number such that
|| Df (x) - g || ≤c, for all x in [a, b].
Transcribed Image Text:Theorem Let f be a continuous function on an open subset U of a Banach space X into a Banach space Y. Let a and b by any distinct points in U such that the segment [a, b] is contained in U and f be differentiable at each point of [a, b]. Let g be any continuous linear function on X into Y. Then || ƒ (b)-f(a) - g (b-a) || ≤c|| b-all, where c is a real number such that || Df (x) - g || ≤c, for all x in [a, b].
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