Sorry Kristi I know what you are referring to...as you know, I have no control over recording. I have edited as much of it as possible. I should also say that this was a unique case among all lecture recordings.Hopefully, new and updated videos in Fall 2013 classes will take care of this problem.
The purpose of the first phase is to find a basic FEASIBLE solution. So, as soon as your artificial variables leave the basis (they become non-basic and equal to zero) you finish phase one and go to phase 2. Also, as it is mentioned in the video, it is possible that an artificial variable remains in the basis but with the right hand side value of zero. So, the general answer to your question is: when all artificial variables are equal to zero.
THANK YOU! Much clearer than my professor. Your students are lucky to have you.
My students are lucky to have me? That is not what they say:-)
Thanks for the kind words.
Sorry Kristi
I know what you are referring to...as you know, I have no control over recording. I have edited as much of it as possible. I should also say that this was a unique case among all lecture recordings.Hopefully, new and updated videos in Fall 2013 classes will take care of this problem.
Great lecture and the students are really lucky.
استاد واقعا عالی بود!
Great lecture - thank you! Why didn't you add an artificial R3 variable into equation 3 at the start of the first phase?
Artificial variables are always only added to the equations who had >= or = before being converted to standard form. Since equation 3 had
Thanks!
Why do you not add an artificial variable to the 3rd constraint?
Thanks,
Tyler
When I go to Second phage???
The purpose of the first phase is to find a basic FEASIBLE solution. So, as soon as your artificial variables leave the basis (they become non-basic and equal to zero) you finish phase one and go to phase 2. Also, as it is mentioned in the video, it is possible that an artificial variable remains in the basis but with the right hand side value of zero. So, the general answer to your question is: when all artificial variables are equal to zero.
I see! Because there are no S2 in equation 1 or 2.....sorry! Thank you :-)
The focusing is making me dizzy