(a) Show that power series representations are unique. In other words, suppose that for all x € (-R, R) we have ∞ n=0 ²₂x² = [b₁x². n=0

College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter9: Sequences, Probability And Counting Theory
Section9.4: Series And Their Notations
Problem 10TI: Determine whether the sum of the infinite series is defined. 24+(12)+6+(3)+
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(a) Show that power series representations are unique. In other words,
suppose that for all re (-R, R) we have
[anx= [b₂x¹.
n=0
n=0
Deduce that for all n = 0, 1, 2, 3, ... we have an = bn.
(b) Let f(x) = and suppose that this power series converges on
n=0
(-R, R). Suppose that for all € (-R, R) we have f'(x) = f(x),
and that f(0) = 1. What are the values of an?
Transcribed Image Text:(a) Show that power series representations are unique. In other words, suppose that for all re (-R, R) we have [anx= [b₂x¹. n=0 n=0 Deduce that for all n = 0, 1, 2, 3, ... we have an = bn. (b) Let f(x) = and suppose that this power series converges on n=0 (-R, R). Suppose that for all € (-R, R) we have f'(x) = f(x), and that f(0) = 1. What are the values of an?
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