Log function
Log( num )
Returns the natural log of a number.
The parameter num must be greater than zero and be a valid number.
Example
Sub Form_Click( )
   Dim I, Msg, NL 
   NL = Chr(13) & Chr(10)
   Msg = Exp(1) & NL
   For I = 1 to 3
   Msg = Msg & Log(Exp(1) ^ I ) & NL
   Next I
   MsgBox Msg
End Sub