Part 2 - Solving a Standard Maximization Problem using the Simplex Method

[Patrax]

What if all of the result multiplication to determine which row you operate on are negative. Do you choose the one closest to 1 or the one that is the most negative?

[sourabh99891]

why 26/5 is divided by 2/5...????

[oma3r]

thx :)

[b0ss03]

Omg i didnt know my calculator did all this.!

Thanks alot!!

[lonlytheonly]

Tons of Thanks to you :)

[Vegafranky]

Thanks a LOT

[cirenosibor]

Thanks, I've got an exam in an hour, and this was the only thing I couldn't work out how to do. You taught it better than my teacher for sure.

[kyriakos221003]

great explanation. you are perfect. thanks for the video 

[SadenovaSH]

thanks a lot!!!!

[mpastion]

Oh god, you are amazing!!!!!!!!! Thank you so much!!

[ash4957]

Thank u very much.......gr8 works

[puicheng134]

can somebody tells me how do we know that X2 X3 and S2 in the end are non basic?? i get everything except that part. :(

[PerzianRoshan]

if i pass my math b/c of these videos, i'm sending u a check

[TheNanopatra]

Thank you so much! May God bless you this helped me a lot.

[pann54]

scottrelliott-what if the smallest non negative entry is 0.I have cme across such problem

[fastjunkie831]

hey man , the R3 row is wrong.after the 10r2+r3->r3 . isn't r2 = 1/5 1 1/5 0 1/5 0 ? you made the calculations with the old r2 row.am i right?

[fastjunkie831]

@fastjunkie831 sorry i was wrong :P it's good

[Taurean85KSA]

thank you so much !

[svtuition]

good and informative 

[bronxville71]

Thank you so much!! This is a subject that you need demonstration not just text and concepts.

[zogenie]

thank you! So very helpful. I have a quiz tomorrow and I actually feel confident because of this.

[Pldvideos88]

Thanks....

[OsQadoomy]

Thank you sooooooo much......I was sooo confused about it

YOU'RE A LEGEND!!

[arqaq]

Thank you very much !

[TheCoreh]

Thanks! That helped me a lot! :-)

[RazyMon]

Just checking:

By unit column you mean column with all 0's and a single 1 in it?

Oh, and thnx for clear explanation.

We do this in college atm, and our tableau has some extra columns, which requires extra work just to maintain correct values (doing this in exam is a major pain in the a** :D)

[scottrelliott]

@RazyMon Yes, that's a unit column.

[fastjunkie831]

@scottrelliott please explain to me why x2 x3 s2 are non basic.what does that mean?how do i figure that out?

[scottrelliott]

@fastjunkie831

They are non basic because they are not unit columns (a column of zeros except for a single 1). In regard to what it means, it tells us that the value of the non basic variables must be zero.

[vellerefondis]

I think there is something wrong with x3, please check it. when you find it -5,i think it's 0 and final 1, i found it 6. Also, why x3 is non basic?

[scottrelliott]

@vellerefondis Sorry, not quite sure I am following you. I think it is correct.

After performing 1/5 R2 --> R2, we take 10 R2 + R3 --> R3

So the last entry in the x3 column is found by 10 (1/5) + (-7) = 2 + (-7) = -5 Maybe I'm not quite understanding your question.

x3 is non-basic in the final tableau because it is a not a unit column (a unit column has all zeros except for a single 1).

[yusefsobky]

So are the variables entering and leaving the basis irrelevant?

[jonathan166]

THANK YOU!!!

[kjmesbahi]

How did you get a positive 3/5 instead of a negative 3/5 for the first row and the forth column in the beginning of this video?

[scottrelliott]

@kjmesbahi Dooohh.... "typo". Luckily it doesn't make any difference in the pivoting. Thanks for the good catch :-)

[missathayde]

Fab!! Thanks for the help

:)