Re: Solving multiple equations
- To: mathgroup at smc.vnet.net
- Subject: [mg125548] Re: Solving multiple equations
- From: Murta <rodrigomurtax at gmail.com>
- Date: Sun, 18 Mar 2012 02:44:57 -0500 (EST)
- Delivered-to: l-mathgroup@mail-archive0.wolfram.com
- References: <jk1g20$51v$1@smc.vnet.net>
Hi! In your example, equation 1 and 2 are in differente forms. I used this to solve your case: eq1 = {0.15, 0.85, X1} == {X3, X2 + X4, X5}; eq2 = {X1 == 9/5, X4/(X3 + X4 + X5) == 1/3}; eq1t = Thread[{0.15, 0.85, X1} == {X3, X2 + X4, X5}]; Solve[Join[eq1t, eq2]] best regards Murta On Mar 17, 4:55 am, Themis Matsoukas <tmatsou... at me.com> wrote: > I have two set of equations, one in the form, > > eq1 = ({0.15, 0.85, X1} == {X3, X2 + X4, X5}) > > and the other in the form > > eq2={1. X1 == 9/5, X4/(X3 + X4 + X5)==1/3} > > Solve understands both Solve[eq1] and Solve[eq2] but if I want to solve the two sets simultaneously, what is the best way to combine eq1 and eq2 into a single list of equations, either of the form of eq1 or of eq2, that Solve can understand? > > Themis