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MathGroup Archive 2005

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Re: integer solution

  • To: mathgroup at smc.vnet.net
  • Subject: [mg62004] Re: [mg61988] integer solution
  • From: Bob Hanlon <hanlonr at cox.net>
  • Date: Wed, 9 Nov 2005 03:45:19 -0500 (EST)
  • Reply-to: hanlonr at cox.net
  • Sender: owner-wri-mathgroup at wolfram.com

{s,d,t,q}/.{Reduce[{
          s+d+t+q==10,
          6s+3d+2t+q==30,
          s>0,d>0,t>0,q>0},
        {s,d},Integers]//ToRules}

{{1, 7, 1, 1}, {2, 3, 4, 1}, {2, 4, 2, 2}, {3, 1, 3, 3}, {3, 2, 1, 4}}


Bob Hanlon

> 
> From: bd satish <bdsatish at gmail.com>
To: mathgroup at smc.vnet.net
> Date: 2005/11/08 Tue AM 03:41:30 EST
> Subject: [mg62004] [mg61988] integer solution
> 
> 
>  I want to find the integral solutions of the following two equations:
>    s + d + t+q =10 ; # two equations
>   6s + 3d + 2t + q = 30 ; # 4 unknowns
>   I want only those solutions for which
>   s>0 d>0 t>0 q>0
> 
> 


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