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MathGroup Archive 2001

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Linear Programming constraint

  • To: mathgroup at
  • Subject: [mg28535] Linear Programming constraint
  • From: "Pramod" <pramod at>
  • Date: Wed, 25 Apr 2001 19:21:45 -0400 (EDT)
  • Sender: owner-wri-mathgroup at


I have an LP problem with 6 constraints

The problem is that last two constraints are OR constraints - not like 
other AND constraints
ie.,    x1 < 40    OR    x1 > 60
Making it clear, the system should find optimal values for all 
variables, but the value of x1 should'nt be between 40 & 60

How can i convert it to one or more AND constraints and add them to the 
rest of the constraints ?

Please help me !!

Thanks in Advance


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