Simple to program yet computationally difficult functions

Posted by ViralShah on Stack Overflow See other posts from Stack Overflow or by ViralShah
Published on 2010-06-10T17:15:53Z Indexed on 2010/06/10 17:22 UTC
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excel

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function

I need an example of a slow Excel sheet that could exist in the real world. Problem is I'm not sure what sort of functions are computationally difficult.

Are there any sort of (maths?) functions that are easy enough to program that they can be used in Excel, yet computationally expensive?

Something which has a real world application is a bonus.

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