Re: simplifying a system of equations
- To: mathgroup at smc.vnet.net
- Subject: [mg106002] Re: [mg105983] simplifying a system of equations
- From: Adriano Pascoletti <adriano.pascoletti at dimi.uniud.it>
- Date: Wed, 30 Dec 2009 04:12:34 -0500 (EST)
- References: <200912290618.BAA02648@smc.vnet.net>
Use replacement rules: x = y + z /. {y -> e + r, z -> t + u} returns e + r + t + u Adriano Pascoletti 2009/12/29 Maria Davis <arbiadr at gmail.com> > 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 > >
- References:
- simplifying a system of equations
- From: Maria Davis <arbiadr@gmail.com>
- simplifying a system of equations