a question about subscript

*To*: mathgroup at smc.vnet.net*Subject*: [mg57820] a question about subscript*From*: Zhou Jiang <jiangzhou_yz at yahoo.com>*Date*: Thu, 9 Jun 2005 05:18:10 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

Hi, my friends, I want to take the advantage of the subscript in Mathematica 5.1. I defined a function like the following: v[t_]=t+t1 Since this is a plane text, I cannot type in the subscript t1 (i.e., t sub 1) for you. This is so simple which represents a time translocation of t1. I want Mathematica to compute v[0] and it is supposed to give t1 (ie. t sub 1). I typed in v[0] but Mathematica gives me 01 (i.e., 0 sub 1). Obviously it is not the correct answer. Can anyone give me some insight of this delima? Thanks a lot.