Just write out the factors and range of the summation. On 9/20/07, Jonathan D. Ellithorpe <jde at berkeley.edu> wrote: > Do we need a closed form exp. for part b? > _______________________________________________ > ee122 mailing list > ee122 at mailman.ICSI.Berkeley.EDU > http://mailman.ICSI.Berkeley.EDU/mailman/listinfo/ee122 >