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March 13th, 2012, 09:53 PM   #1
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Why can a function be expressed as a Taylor Series?

Where can I see proof for this? Also a few "simple" deductions (cos idk yet) of most simple Taylor series (cos x, sin x, e^x, etc).
A book with a straightforward explanation or something like that.

tks in advance
peter
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March 14th, 2012, 12:56 PM   #2
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Re: Why can a function be expressed as a Taylor Series?

Some functions can and some cannot. The concept of analytic function is what you need to understand.

http://en.wikipedia.org/wiki/Analytic_function
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