Franco,
Sounds easy, but I am not sure. Try this.
- Feed the array (of whose elements you need to multiply) to a For loop (it gets auto-indexed, if not idex it).
- Multiply each element with the output of the formula node (which should be in the for loop or can be outside too, the output of the formula node can be fed to the for loop if outside).
- Then pull the output of the multiplication out of the FOR loop (which automatically becomes an array if the indexing is enabled) and then feed it further to the plot or what ever.
This should work. (FIND THE EXAMPLE ATTATCHED)
Good Luck and Have fun.
-Pari.