problem with"Re" syntax

*To*: mathgroup at smc.vnet.net*Subject*: [mg116766] problem with"Re" syntax*From*: tarun dutta <tarunduttaz at gmail.com>*Date*: Sat, 26 Feb 2011 06:09:28 -0500 (EST)

c[i_][t] = a[i][t] + I*b[i][t]; d[i_][t] = g[i][t] + I*h[i][t]; del = Together[Sum[Sqrt[i]*d[i - 1][t]*d[i][t], {i, 0, 5}]] Re[del] the problem is that after executing the program, as output I am not able to get only the real part of the expression(del).the output contains the whole expression though i am using "Re" term. some valuable insight will be much appreciated. regards, tarun