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- September 8th 2009, 03:57 AM #1

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- Jan 2009
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- 381

## sum

Obtain an expression of f(x) in ascending power of 1/x up to the term in 1/x^3 . Determine the set of values of x which this expansion is valid .

My work .

When i continue simplifying , i got

Am i correct ?

The other thing is to find the set of values of x , is it

and ??

- September 8th 2009, 04:33 AM #2

- September 8th 2009, 05:42 AM #3

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