Hello.
I found the Trendline function in Charts very useful.
My question is: Are there equivalent functions?

hat I mean, I know about "Trend" and "Linset" functions, yet in Trendline
there are Polynomial Approximations, Exponential Approximations etc... Which
I couldn't find anywhere. Are they available? How can I create the dataset
according to Excel approximation?

Are there anymore Approxiamtions / Interpolations in Excel (Splines, Least
Squares, etc..)?

I'm using Office 2007.

Thanks.

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Royi Avital