Turn on thread page Beta

Simplex method watch

Announcements
    • Thread Starter
    Offline

    16
    ReputationRep:
    A few things I need some clarification on:

    1) can an optimal solution ever exist with a negative RHS i.e. can a basic variable ever be non-positive in an optimal solution?

    I'll add more when I remember them. I'm generally good at simplex but tend to forget details
    Offline

    0
    ReputationRep:
    I think technically it could - it would just mean that the optimal solution was negative, so if it was profit it would be a loss...
    All we've learnt is that for an optimal solution there can't be -ve coefficients in the objective row.
    Sorry I can't be too definate on that one...
    Simplex is definately one of my least favourite D2 things!
    • Thread Starter
    Offline

    16
    ReputationRep:
    (Original post by Susanne839)
    I think technically it could - it would just mean that the optimal solution was negative, so if it was profit it would be a loss...
    All we've learnt is that for an optimal solution there can't be -ve coefficients in the objective row.
    Sorry I can't be too definate on that one...
    Simplex is definately one of my least favourite D2 things!
    simplex is the best! I love it. I think that the RHS should not be negative
    in an optimal, because the teacher rtold us that whenever there is a negative RHS, we should use the dual simplex method to get rid of it

    thanks anyway
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: March 13, 2011

University open days

  • University of the Arts London
    MA Performance Design and Practice Open Day Postgraduate
    Thu, 24 Jan '19
  • Brunel University London
    Undergraduate Experience Days Undergraduate
    Sat, 26 Jan '19
  • SOAS University of London
    Postgraduate Open Day Postgraduate
    Sat, 26 Jan '19
Poll
Are you chained to your phone?
Useful resources

Make your revision easier

Maths

Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

Equations

How to use LaTex

Writing equations the easy way

Equations

Best calculators for A level Maths

Tips on which model to get

Student revising

Study habits of A* students

Top tips from students who have already aced their exams

Study Planner

Create your own Study Planner

Never miss a deadline again

Polling station sign

Thinking about a maths degree?

Chat with other maths applicants

Can you help? Study help unanswered threads

Groups associated with this forum:

View associated groups

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.