Re: why this system cannot be solved!
- To: mathgroup at smc.vnet.net
- Subject: [mg118062] Re: why this system cannot be solved!
- From: Dana DeLouis <dana.del at gmail.com>
- Date: Mon, 11 Apr 2011 07:05:51 -0400 (EDT)
On Mar 21, 7:18 am, olfa <olfa.mra... at yahoo.fr> wrote: > Hi Mathematica community, > > I've tried to solve the variable xP in this system with Reduce over > Integers,Reals and Complexe: > 0 <= xP < a && Mod[x, a] == Mod[xP, a] > unfortunately it cannot be solved . > > the output should be xP==Mod[x,a]. Hi. Not sure if this helps. Simplify[ Mod[xP, a], 0<=xP<a] xP equ= Mod[xP, a]==Mod[x, a]; Doesn=92t seem to work on the entire equation: Simplify[equ,0<=xP<a] Mod[x,a]==Mod[xP,a] Seems to work on the parts: Map[Simplify[#,0<=xP<a]&, equ] xP==Mod[x,a] = = = = Dana DeLouis=