One forum at a time please

Steve


On Tue, 03 Oct 2006 03:59:01 +0100, Eutrapelia
wrote:

Does anyone have a relatively precise method for calculating derivatives
in
Excel. There is of course the option of using the (A3-A1)/(B3-B1) to
find
and approximation at B2, but does anyone have anything that is a bit more
reliable?

Thanks