Special LP Cases in Simplex Method | Infeasibility, Alternative Solutions, Unboundedness, Degeneracy

This video discusses special situations in linear programming using the Simplex Tableau: infeasible solutions, alternative (multiple) or infinite optimal solutions, unboundedness, and degenerate solutions.
00:00 Intro
00:12 Infeasibility
01:52 Alternative/Multiple
03:54 Unboundedness
05:10 Degeneracy
06:37 Example - Problem 1
07:09 Example - Problem 2
07:38 Example - Problem 3
08:06 Example - Problem 4
08:27 Example - Problem 5
Simplex Tableau setup: • Initial Simplex Tablea...
Solve Simplex LP (Intro): • Intro to Simplex Metho...
Big M Method: • Simplex Method 2 | Big...

[@kowyo]

I love this!!! because I follow your method in Intro to Simplex Method | Solve LP | Simplex Tableau and the optimal solution develops in a oppsite direction and I am so overwhelmed. This video surely helps!

[@maddoscientist1905]

Best LP videos I've found on youtube. Thank you so much!

[@geniusharma]

Thank you so much !!!! It was so effective and simple to learn which I couldn't find on any other youtube channel ......

[@hawad10]

U made my life alot easier 💓

[@joshemman]

You're welcome!

[@user-hn3xy5ft4q]

Hope you continue making such wonderful lessons sir!

[@joshemman]

Will try. Thank you.

[@user-hn3xy5ft4q]

@@joshemman Sir I came across a question in which b column contains a 0 term (degenerate case) but the c-z row doesn't contain all negative terms which means I can't yet show that the solution is optimal. in such a situation which row should I choose as pivot row for making the next tableau? Answer is correct when I choose the row with 0 term in b column as the pivot row but I thought we choose only smallest positive ratio as pivot row. Please help me with this doubt

[@Maximus_x124]

What is the question?@@user-hn3xy5ft4q

[@attiqakanwal]

Thank you so much bruh 🥺❤

[@GodIsEverPowerful]

so nice concise 🙏

[@joshemman]

Thanks for liking it.

[@JeremiahKipkorir-cn9pf]

You are the best sir💯

[@joshemman]

Thanks, Jeremiah.

[@ahmadtariq3960]

Thank sir you are my best teacher❤

[@joshemman]

You're welcome, Ahmad.

[@gbalakrishnareddy7002]

Thank you a lot for explaining complicated things in a short time

[@joshemman]

You're welcome!

[@andrewwang2209]

I think there is a big typo on 6:06 where the slack variable has a cB of 6!

[@user-rj3of6vq6c]

can you make a video about duality linear programming?th!!!!!!

[@Apersonl0l]

when should we introduce an artificial variable a to test for infeasibility when constructing the tableu form?

[@joshemman]

You introduce artificial variables because the LP requires it. Not because you want to test for special cases like infeasibility. This video might help: kzbin.info/www/bejne/ham9g2eXpL56ZsU

[@Apersonl0l]

@@joshemman thank you for replying, please keep making digestible educational videos like these ❤️

[@sourabhborkar8167]

You missed one important point in Degeneracy is the possibility of "cycling".

[@joshemman]

👍You're right.