You are Here: Home >< Maths

# Simplex method watch

Announcements
1. 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
2. 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!
3. (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

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: March 13, 2011
Today on TSR

10 instant mood-lifters

### University open days

• University of the Arts London
MA Performance Design and Practice Open Day Postgraduate
Thu, 24 Jan '19
• Brunel University London
Sat, 26 Jan '19
• SOAS University of London
Sat, 26 Jan '19
Poll
Useful resources

### Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams