omis-problem4

[Gabriela Tchaga]

Anyone started on this yet?

--
Gabriela G. Tchaga
GGTc...@gmail.com
510-386-5619

[Rachna Patel]

 anyone get these answers or different answers?? are you all printing out your solver reports?

[Carey Deangelis]

So did you guys just take the solver set up for the shoes/purse problem, change the variable that changed in the question and rerun the solver?

I am trying to do that and it is not working for me. 

[Darren Ng]

I got the same answers as Rachna for a and b. However, for c, I concluded the problem is "multiple solutions" because there are large values (1E+30) in the allowable increase/decrease in the Sensitivity Report. Is that correct? or is Rachna's solution (Redundant Constraint) correct?

Carey...I adjusted my variables as you described. Not sure why its not working for you.

[Subramaniam Narayanan]

(a) Mutiple Optimal Solutions
(b) Infeasible
(c) Redundant Constraint
(d) Unbounded

Anyone know how to determine redundant constraint from solver reports?

[Sudha Venkatesh]

a .Mutiple Optimal Solutions
b.Infeasible
c. Redundant Constraint
d.Unbounded

[Carey Deangelis]

I got the same answers as everyone else.

Darren, I figured out why the equation wasn't working for me. When I copied it I accidentally deleted one of the formulas.  It worked once I figured that out.

On Tue, Oct 18, 2011 at 9:44 PM, Darren Ng <darr...@gmail.com> wrote:

[Darren Ng]

How do we know that c is Redundant Constraints?

[Rachna Patel]

For A, how do you know this in solver and what do you do about it?

[Carey Deangelis]

For A, I went off the description for the notes to know it was multiple solutions.  I have a questions on the solution.  When I ran it through solver I still got X1 = 130 and X2=0 but that e = 4000 something.  How do we know if the x1 and x2 changes?

Carey

[Carey DeAngelis]

Rachna

I have a question on your A. How did you get a new x1 and x2. I put it into the solver and got the same solution as the original but a higher e value. 

Thanks 

Carey 

Sent from my iPhone

<355p4.pdf>

[Sridhar]

I too get new X1 (100) and x2(20) in solver for A. Carey - you sure
you changed the profit contrib to 37.5 right ?

On Oct 19, 12:26 pm, Carey DeAngelis <carey.deange...@gmail.com>
wrote:

> Rachna
>
> I have a question on your A. How did you get a new x1 and x2. I put it into the solver and got the same solution as the original but a higher e value.
>
> Thanks
>
> Carey
>
> Sent from my iPhone
>

> On Oct 18, 2011, at 7:45 PM, Rachna Patel <rachna.r.pa...@gmail.com> wrote:
>
>
>
>
>
>
>
> >  anyone get these answers or different answers?? are you all printing out your solver reports?
>

> > On Tue, Oct 18, 2011 at 6:07 PM, Gabriela Tchaga <ggtch...@gmail.com> wrote:
> > Anyone started on this yet?
>
> > --
> > Gabriela G. Tchaga

> > GGTch...@gmail.com
> > 510-386-5619
>
> > <355p4.pdf>

[Rachna Patel]

Does anyone have an answer for "what they would do" for A?

[Carey Deangelis]

Ok, so I feel stupid.  Yes, I was changing the profit contribution but for the wrong thing.  All fixed and working correctly now. 

thanks everyone for you help.

Carey

On Wed, Oct 19, 2011 at 1:34 PM, Sridhar <sri...@gmail.com> wrote:

[Manuel Severino]

I said C is redundant b/c the answer for both cutting and inspection =260 AND, it shows that the allowable decrease of the Inspection could be 40 and not change the answer.


Manny

[Gabriel Bowers]

It might be good to ask Collins to review these in class.  I want to make sure that I get this right on the mid-term.