The geometric series ' (for |x| < 1) is particularly useful, as its sum, 1- x can be related to n=0 many other functions. Using this, find a power series (centred at 0) representation of arctan(x), and determine the x-values for which this is valid. Hint: integrating or differentiating may be required.

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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1. The geometric series >a" (for |x| < 1) is particularly useful, as its sum,
be related to
can
1- x
n=0
other functions. Using this, find a power series (centred at 0) representation of arctan(x),
and determine the x-values for which this is valid. Hint: integrating or differentiating may be
required.
many
Transcribed Image Text:1 1. The geometric series >a" (for |x| < 1) is particularly useful, as its sum, be related to can 1- x n=0 other functions. Using this, find a power series (centred at 0) representation of arctan(x), and determine the x-values for which this is valid. Hint: integrating or differentiating may be required. many
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