Re: simplifying a system of equations
- To: mathgroup at smc.vnet.net
- Subject: [mg106023] Re: simplifying a system of equations
- From: Emu <samuel.thomas.blake at gmail.com>
- Date: Wed, 30 Dec 2009 04:16:35 -0500 (EST)
- References: <hhc76q$2mj$1@smc.vnet.net>
On Dec 29, 5:22 pm, Maria Davis <arbi... at gmail.com> wrote: > Hi! > > I have a system of equations, that I want to solve symbolically and > not numerically how can I do this? > example: suppose I have the following system of equations: > x=y+z > y=e+r > z=t+u > I want to obtain x=e+r+t+u as a result. > I have tried the command > Solve[x == y + z && y == e + r && z == t + u, {x}] > but Solve returns :x=y+z > > Can you please help me? > Thank you in advance I can't see a direct way to do this using Reduce, but the following code seems to work.... In[262]:= Reduce[GroebnerBasis[{x == y + z, y == e + r, z == = t + u}, {x}, {y, z}] == 0, x] Out[262]= x == e + r + t + u Sam