Midterm Studying

[Darren Ng]

Does anybody remember the professor saying that we do not need to do a minimization problem? Did he mean that there are no questions about minimization? Specifically, do we need to know artificial variables and the Dantzig 2 phase method?

[Subramaniam Narayanan]

I think he said the simplex prob is a maximization prob with 2 var and 2 constraints. So no artificial vars there. The rest of exam will definitely have some ques about those...

[Maddy Fouts]

yeah thats what i took away as well

--

Madelaine G. Fouts
Class of 2011
Leavey School of Business

Santa Clara University

[Darren Ng]

ok, thanks.

[Sidra Haider]

Does anyone have a very concise way of explaining how to spot multiple optimal solutions in the excel solver report? Which cells should I look at and what should I expect in them? I understand all the other scenarios but often get confused on this one.

Thanks,

--
Sidra Haider
sidra....@gmail.com

[Sudha Venkatesh]

Sidra,

 

Look for the shadow prices of the non basic variables, if one or more of those variables has the value '0' then  multiple optimal solution exists.(check #4 a: shadow price of x4(unused sewing time) =0).

 

Sudha.

[Carey DeAngelis]

So I think I am confusing myself. If we are going to get a simplex problem with 2 variables and 2 equations, will we need to add slack variables to solve?

Carey

Sent from my iPhone

[Elliott Le]

Yes, you will need to get rid of the inequalities.

Elliott Le

--
Elliott Le

[Gabriel Bowers]

We would need slack variables.

 

What he likely meant was that we would have two constraints.  Each constraint would need a slack variable.

 

This is the same as the simplex problems (purses + shoes) that we've been solving in the HMWK.

 

Gabriel

 

On Mon, Oct 24, 2011 at 11:54 AM, Carey DeAngelis <carey.d...@gmail.com> wrote:

[Carey DeAngelis]

Awesome. Ok I was leaning that way but just wanted to confirm. 

See everyone tonight. 

Carey

Sent from my iPhone

[Sidra]

Thanks Sudha. 

Sent from my iPhone

On Oct 23, 2011, at 5:16 PM, Sudha Venkatesh <sudha.v...@gmail.com> wrote:

[Maddy Fouts]

hi all,

sorry but just to confirm there is not going to be a minimizing problem on the test, correct?? 

[Sudha Venkatesh]

Yes ,no minimization problems to solve. But the professor said some basic questions on minimization method shall be asked.