Re: a question about subscript

*To*: mathgroup at smc.vnet.net*Subject*: [mg57863] Re: a question about subscript*From*: "Tomas Garza" <tgarza10 at msn.com>*Date*: Fri, 10 Jun 2005 02:29:29 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

You should use ":=" instead of just "=" if you are defining a function. Please look at SetDelayed in the Help browser, especially the further examples. I can't see how you get v[0] = 01. I get v[0]. The subscript may be typed as Subscript[t,1] or t Ctrl- (i.e. the letter t followed by simultaneously pressing control-minus). Tomas Garza Mexico City >From: Zhou Jiang <jiangzhou_yz at yahoo.com> To: mathgroup at smc.vnet.net >Subject: [mg57863] a question about subscript >Date: Thu, 9 Jun 2005 05:18:10 -0400 (EDT) > >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. > > >