Problem 4 -- Do I have to sum n i(t)?
Q In Problem 4 do we have to sum the output n_i(t) over i?
A The question asks to plot the output n(t)=[n_1(t) n_2(t) .... n_N(t)] versus the output index, at three different times. Therefore you will have on the x axis an index running from 1 to N, and on the y axis you will plot n(t) as a function of i, at the specified times.
--Franco 20:14, 30 September 2006 (PDT)