how to set initial values to symbolic variable array?

*To*: mathgroup at smc.vnet.net*Subject*: [mg129957] how to set initial values to symbolic variable array?*From*: Jon <devout1977 at gmail.com>*Date*: Wed, 27 Feb 2013 23:45:55 -0500 (EST)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com*Delivered-to*: l-mathgroup@wolfram.com*Delivered-to*: mathgroup-newout@smc.vnet.net*Delivered-to*: mathgroup-newsend@smc.vnet.net

Dear All, Suppose I defined a symbolic variable array as Array[a,4] and defined a function as f = a[1] + a[2] + a[3] + a[4] I need to evaluate the value of f in the following way, f/.{a[1]->1,a[2]->1, ...} but specify each element of the array one by one is very troublesome, and I wonder whether there is something like a group definition like f/.{a[1:4]->1} to define the four variables at the same time with the same value. Thanks for your help, Sincerely, John

**Follow-Ups**:**Re: how to set initial values to symbolic variable array?***From:*Bob Hanlon <hanlonr357@gmail.com>

**Re: how to set initial values to symbolic variable array?***From:*Tomas Garza <tgarza10@msn.com>

**Re: how to set initial values to symbolic variable array?***From:*Murray Eisenberg <murray@math.umass.edu>