Hi Jerry, thank you very much for your reply and references.

Francesco

"Jerry W. Lewis" wrote:

Excel does not natively offer calculus functionality. Some functions

can be integrated in closed form.

http://integrals.wolfram.com/

or

http://maxima.sourceforge.net/

may help identify some of these if your calculus is rusty.

Where closed form integrals do not exist (or where you do not know the

function), there are many methods for numeric integration.

http://www.stfx.ca/people/bliengme/E...UnderCurve.htm

implements a couple of simple methods in Excel. Chapter 4 of Numerical

Recipes in ... goes into more detail in C, C++, Fortran, or Pascal (out

of print). There may even have been one in Basic at one time. The C

and Fortran versions are available on-line

http://www.library.cornell.edu/nr/bookcpdf.html

http://www.library.cornell.edu/nr/cbookfpdf.html

Fortran is probably easier to translate into VBA than C.

Jerry

Francesco wrote:

Hi all, I wanted to calculate some functions containing integrals using

Excel, but it doesn't seem my Excel can calculate any kind of integral. Any

help?