Re: Defining Functions and Simplifying Solutions

*To*: mathgroup at smc.vnet.net*Subject*: [mg90554] Re: [mg90498] Defining Functions and Simplifying Solutions*From*: Bob Hanlon <hanlonr at cox.net>*Date*: Sat, 12 Jul 2008 05:35:23 -0400 (EDT)*Reply-to*: hanlonr at cox.net

I do not understand your first question. As to the second, use Chop. soln = {{a -> (0. (e1 \[Beta]1 + e2 \[Beta]2 \[Lambda]))/(rA \[Tau]^2)}}; soln[[1]] // Chop {a->0} Bob Hanlon ---- Locus <Gigalutscher at jubii.de> wrote: ============= 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!