If I am not mistaken,

y=10^x

Then...
Dy/Dx =POWER(10,x)*LN(10)

--
HTH :)
Dana DeLouis
Windows XP & Office 2003


"nexxusvp" wrote in message
oups.com...
I have a two columns of data in excel (x) and (y). I want to
calculate instantaneous rate of change for values in (y) with respect
(x). How can I do this?

X Y dy/dx
1 10
2 100 ?
3 1000 ?
4 10000 ?
5 100000 ?