By selecting several cells first, like 5 rows x 2 columns, for example.
Enter the LINEST function, press ctrl/shift/enter, see different results in
the cells.
There's not a way to inherently know if a function should be entered as an
array formula without using help (excel's or other folks' or newsgroups, or
trial & error --)
HTH
Bob Umlas
Excel MVP

"hsPipe" wrote in message
...
I would like to use the worksheetfunction.linEst function in excel VBA,
but
need help on how to identify that the function returns an array rather
than a
single value. Thank you.
--
Ho-Shu