Duality 6 Dual of an LPP with mixed constraints and a variable unrestricted in sign

[@yashnikhare7263]

U r the best sir literally... I have been watching soo many videos but the way u taught was awesome

[@thebiasedindian7145]

Thanks Sir, you explain with a lot of passion!

[@ammadulhaq7406]

Thanks sir may god bless u!

[@mayankagarwal4545]

Sir, you have written in revised primal x1,x2,x3,x4>=0. I guess it will be x1,x2,x4,x5>=0 ??

[@subhroneelmoitra1895]

Doesn't even check comments
nice.

[@mdjahidhasan6398]

I also think so

[@pratyashapriyadarshini7417]

Very good explanation sir

[@EntertainmentKaBhandara]

Very well explained

[@PUAARAcademy]

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[@dilagorur7093]

thanks for this clear explanation

[@PUAARAcademy]

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[@PUAARAcademy]

Welcome! Keep watching keep learning... Visit and subscribe my channel and don't forget to recommend my channel and lectures/playlists to others also... you will find so many subjects/topics... Thanks... :)

[@amanshaw4357]

Cleared.. Thank you sir...

[@rishabhjain4600]

Thank You Sir :)
Great Explanation.

[@gaming4life25]

got it! thankyou so much sir.

[@anitamandal4597]

Thanks a lot... It was of great help

[@noyonislam6113]

tnx sir from Bangladesh

[@abbassayed7705]

nice explanation..thanx sir

[@dobidobi8257]

very informative could youplease explain how to handle two unrestricted variables

[@PUAARAcademy]

For both the unrestricted variables we have to do the same things as we do in case of one unrestricted variable, but take utmost care because it becomes quite lengthy and tedious...

[@nirajvyas9997]

Thanks
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[@apsharrizwan6512]

thanks alot sir

[@Delhifreaks]

thnk u sirr

[@polashjyotidutta5322]

Sir in case of greater than or less than equal sign..there is only equality sign.....what will we do?? Plz sir

[@PUAARAcademy]

I have already discussed all such things but in different lectures... There are playlists on different chapters/topics on the channel...

[@saikatghosh4433]

sir in your 6 no. video
you say that x4 & x5 are non negative so
if we consider x4 as 3 & x5 as 6
as 3,6 are non negetive ..
do the difference may be -ve
so how will it done ???

[@23-nakulshukla30]

Saikat Ghosh x3 is unrestricted means it's value can be positive or negative

[@intellagent7622]

how to solve the dual problem without using simplex method?

[@PUAARAcademy]

We can use Graphical Method, but in cases where number of variables remain up to two only...

[@intellagent7622]

@@PUAARAcademy Thanks, your videos on this subject were more helpful than any others. You rock!

[@rajkumarsharma6798]

how to solve when x3 & x4 unrestricted.sir plz reply.

[@PUAARAcademy]

Whenever we have the variable(s) unrestricted in sign, the process remains the same, i.e. substitute such variable by the difference between two (new) non-negative variables. This rule is to be followed for all such variables irrespective of the number of such variables and also the order/place of such variables, i.e. whether such variable is first, second or even last. Please remember that whenever there is a variable unrestricted in sign in a primal, there will be an equality at the same place/order in the dual of that primal...:)

[@rajkumarsharma6798]

sir plz solve that kind of problem...

[@rajkumarsharma6798]

maximize z=3x1+X2+2X3-X4
subject to:2x1-x2+3X3+X4=1
X1+X2-X3+X4=3 and X1,X2greater tan equal to 0,x3 and X4 unrestricted.

[@shubh16.96]

Equation 1 in primal will probably be x1 + x2 + 3x3

[@apsharrizwan6512]

thanks alot sir

[@kritarthadeori9738]

thanx a lot sir