exponents when changing from 3.0 to 4.0

*To*: mathgroup at smc.vnet.net*Subject*: [mg24207] exponents when changing from 3.0 to 4.0*From*: Ruchi5ten at aol.com*Date*: Fri, 30 Jun 2000 01:57:34 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

i made a program on mathematica 3.0 and i'm trying to use on mathematica 4.0. in 3.0 the output for an operation (that i attached at the bottom of this email) is "0" but in 4.0 it gives me "0. + 0. I" where I is an imaginary number. the question: how do i make it so that the ouput rounds itself to 0 since obviously 0 + 0 times anything is zero ? (i want it to apply to the whole document, not just one function) sincerely sipai klein attachement: I ask for a table Table[listpro[x_][[y]].matrices[[y]], {y, 4}] where matrices[[y]] is matrices=Table[matrix[t_, r_]={{I t, r}, {r, I t}}*E^(I*asd[[yy]]), {yy, 4}]; and listrpro[x_] is {{1, 0}, {0, 0}, {0, 0}, {0, 0}}