How to convert list into polynomial? reverse of args()



Hi all,
Thanks for the last answer. I need to convert a list into the polynomial.
Basically I need to revert the operation of args() e.g.
[f(x),f(y),f(z),....] convert to f(x)*f(y)*f(z)*... and the operator can
be anything e.g. +,-,etc.
Regards
Dileep