Not sure what your given f(x) has to do with it, but you can find
the row and column numbers for any cell as

Dim n As Long
Dim m As Integer
Dim cell As Range
Set cell = <given cell
With cell
n = .Row
m = .Column
End With


If you're talking about worksheet functions instead of programming,
then for f(x) = SUM(n, m):

=SUM(ROW(),COLUMN())

will give the sum of the row number and column number.

In article ,
"Keith" wrote:

Question:
Given a formula, say f(x), assigned to any given cell, c
(n,m), I need to know n and m. Can any one help me?

Thanks

kc