running varibiables into vba

[paul]

number,x, from cell A3 and a positive integer, n, from cell B3 then
returns into cell C3 the value of x raised to the power n divided by
n factorial.


where x in cell a3 = 2 and n in cell b3 = 5


im using this formula, but when i run it nothing happens, how do i
make this vba programme run and return the value?

how do i delcare x and n variables intot his workign vba code so that
the vba can run, im not sure how to declre them, how you do it.

thanks



this is the vba programme:


Public Function MyFunction(X As Double, N As Long) As Variant
If (N <= 0&) _
Then
MyFunction = "N must be an integer greater than zero"
Else
MyFunction = (X ^ N) / WorksheetFunction.Fact(N)
End If
End Function


how do i delare these

 

[Tom Ogilvy]

If you are using it in a worksheet

Public Function MyFunction(X As Range, N As Range) As Variant
MyFunction = "Bad Input Values"
If IsNumeric(N.Value) And IsNumeric(X.Value) Then
If N.Value <= 0& Then
MyFunction = "N must be an integer greater than zero"
Else
MyFunction = (X ^ Int(N)) / WorksheetFunction.Fact(Int(N))
End If
End If
End Function
Usage:
=MyFunction(A3,B3)

Worked for me. Function should be placed in a general module (as in
Insert=>Module) rather than a class module such as the worksheet or
thisworkbook modules.