Re: Simple question from a biologist

*To*: mathgroup at smc.vnet.net*Subject*: [mg67157] Re: Simple question from a biologist*From*: bghiggins at ucdavis.edu*Date*: Sun, 11 Jun 2006 02:17:12 -0400 (EDT)*References*: <e6e27d$1tp$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

I think you problem is that you did not leave a space between A and x in rate=Ax The following should help rate = A*x /. Sol {(x*y*z)/(x*y + x*z + y*z)} etc, Cheers, Brian tnad wrote: > I'm a bit new to this so please bear with me. I solved this eqation: > > Sol = Solve[{{{-x, 0, z}, {x, -y, 0}, {0, y, -z}}.{A, B, C} == 0, A + B + C == 1}, {A, B, C}] > > and got the ouputs of A, B and C interms of x,y, and z each. > > Now I want to express a term called "rate" where rate = Ax = By = Cz in terms of x, y and Z only. > > So I tried to do this: > Solve[rate == Ax , rate] /. Sol > > but I cannot get the rate in terms of x,y and z. > Is there a better way to do this? Also if someone knows of a better tuttorial (better than the built-in tuttorial) for mathematica, please let me know.