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- 1. College Surplus Auction
- 2. Simplex Method: Two-phase Technique (Class Lecture)
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- 6. Two-phase Technique of Simplex Method - Part 1
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Simplex Method: Two-phase Technique (Class Lecture)
This is a class lecture in operations research class related to two-phase technique of simplex method. To get the most out of this lecture you should look at other ...
User Comments
Michelle MacDonald
commented
on 28 Sep 2014
Great lecture - thank you! Why didn't you add an artificial R3 variable
into equation 3 at the start of the first phase?
Roozbehy
commented
on 27 Nov 2014
Artificial variables are always only added to the equations who had >= or = before being converted to standard form. Since equation 3 had <= before being converted to standard form, no artificial variable should be added to it.
j7engel
commented
on 06 Jun 2014
THANK YOU! Much clearer than my professor. Your students are lucky to have
you.
DrSalimian
commented
on 06 Jun 2014
My students are lucky to have me? That is not what they say:-)Thanks for the kind words.
Tyler Matthews
commented
on 20 Nov 2013
Why do you not add an artificial variable to the 3rd constraint?
Thanks,
Tyler
akshay gh
commented
on 14 Mar 2014
<or= no need to add artificial variable , it's only for >or= or =
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Meet the Movement: 2015 Food Waste and Hunger Summit
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Start Finding Surplus Merchandise Today
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Two-phase Technique of Simplex Method - Part 1
The first video of the two part series in which a sample problem is used to demonstrate the steps of two-phase method. Note: The videos on this channel are ...
User Comments
DAHMANI Abir
commented
on 06 Jan 2016
why we have just one artificial variable?
DAHMANI Abir
commented
on 15 Jan 2016
+DrSalimian thanks for your answer
DrSalimian
commented
on 15 Jan 2016
+DAHMANI Abir remember that if a constraint has a <= sign we only add slack variable to it to convert it into an equation. this slack variable has all conditions for being a basic variable. if a constraint is in the >= form then we need to subtract a variable from left hand side. this variable can not be used as a basic variable...my suggestion is to watch MOOCOR modules (each about 30 minutes) which explains these concepts in detail.
Shiny Dhar
commented
on 09 Mar 2014
you shouldve explained how to introduce artificial variables!!!!
raj shekhar (cool raj)
commented
on 09 Mar 2014
okay good!!
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