If Two Entire Functions Agree On A Segment Of The Real Axis, Must They Agree On C? Jse

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter4: Polynomial And Rational Functions
Section4.5: Rational Functions
Problem 51E
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If Two Entire Functions Agree On A Segment Of The Real Axis, Must They Agree On C?
Use
Uniqueness Theorem
Suppose f(z) is analytic in a domain D and that {zn} is a sequence of distinct points
converging to a point zo in D. If f(zn) = 0 for each n, then f(z) = 0 throughout D.
Identity Theorem
Suppose {zn} is a sequence of points having a limit point in a domain D. If f(2) and
g(2) are analytic in D with f(zn) = g(zn) for each n, then f(2) = g(2) throughout D.
Transcribed Image Text:If Two Entire Functions Agree On A Segment Of The Real Axis, Must They Agree On C? Use Uniqueness Theorem Suppose f(z) is analytic in a domain D and that {zn} is a sequence of distinct points converging to a point zo in D. If f(zn) = 0 for each n, then f(z) = 0 throughout D. Identity Theorem Suppose {zn} is a sequence of points having a limit point in a domain D. If f(2) and g(2) are analytic in D with f(zn) = g(zn) for each n, then f(2) = g(2) throughout D.
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