power series & radius of convergence

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Page 1: power series & radius of convergence
Page 2: power series & radius of convergence

Taylor and Maclaurin Series

Page 3: power series & radius of convergence

Taylor and Maclaurin Series

Page 4: power series & radius of convergence

Taylor and Maclaurin Series

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Taylor and Maclaurin Series

Page 6: power series & radius of convergence

Taylor and Maclaurin Series

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Taylor and Maclaurin Series

Page 8: power series & radius of convergence

Example 1

Page 9: power series & radius of convergence

Example 1 – Solution

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Taylor and Maclaurin Series

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Taylor and Maclaurin Series

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Taylor and Maclaurin Series

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Taylor and Maclaurin Series

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Taylor and Maclaurin Series

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Taylor and Maclaurin Series

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Taylor and Maclaurin Series

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Taylor and Maclaurin Series

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Taylor and Maclaurin Series

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Taylor and Maclaurin Series

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Taylor and Maclaurin Series

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Example 2

Page 22: power series & radius of convergence

Example 2 – Solution

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Taylor and Maclaurin Series

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Example 8

Page 25: power series & radius of convergence

Example 8 – Solution

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Example 8 – Solution

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DEFINATION

A power series about x=0 is a series of the form

=+++…….++……… A power series about x=a is a series of the form

=+++….++…. In which the center a and the coefficieants , , ,…., are constants.

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THE CONVERGENCE THEOREM FOR POWER SERIES

If the power series =+++……. Converges for x=c ≠0,then it converges absolutely for all x with |x|<|c|. If the series diverges for x=d , then it diverges for all x with |x|>|d|..

Page 29: power series & radius of convergence

RADIUS OF CONVERGENCE In previous explainations there is a number R so that power

series will converge for , |x – a|< R and will diverge for |x – a|> R.This number is called the radius of convergence for the series.Note that the series may or may not converge if |x – a| =R .What happens at these points will not change the radius of cnvergencce.

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