Defining Functions and Simplifying Solutions

*To*: mathgroup at smc.vnet.net*Subject*: [mg90498] Defining Functions and Simplifying Solutions*From*: Locus <Gigalutscher at jubii.de>*Date*: Fri, 11 Jul 2008 02:02:01 -0400 (EDT)

Hello! I actually have to questions: 1. Is there a more handy way to define/use functions as compared to the following way (which works, but is complicated always typing the variable definitions): G[\[Alpha]1_Real, \[Alpha]2_Real, e1_Real, e2_Real] = \[Alpha]1*e1 + \[Alpha]2*e2 v[G_Real] = a*G[\[Alpha]1, \[Alpha]2, e1, e2] + b 2. After several steps, I receive the following solution {{a -> (0. (e1 \[Beta]1 + e2 \[Beta]2 \[Lambda]))/(rA \[Tau]^2)}} which obviously equals zero. How can I 'force' Mathematica to display only 0 as result and not such a unnessecarily complicated expression? FullSimplify does not work here. Thanks a lot!

**Follow-Ups**:**Re: Defining Functions and Simplifying Solutions***From:*Sseziwa Mukasa <mukasa@jeol.com>