Power Series
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Imagine you had a functions that was very difficult to integrate. Let us look at an
example:
2
)
(
x
e
x
f
One could prove that this has no nice closed form integral with the standard
functions we have come to use and love.
So then how could we integrate this? Perhaps it does not matter, this function may
not even really appear in real life right? Let us take a look at this function:
Wait… this looks like a normal curve… which is used a lot in different areas….

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