expanding sums



Zach wrote:

>> This works, but simpler would be:
>>
>>   makelist( f[n](x), n, 0, 4)
>>
>>           -s
>>
> 
> 
> True, listen to this guy.  I new my solution felt too much like a DO
> statement.


Thank you 
I'll use both yours and Stavros' suggestions
--
Pol