Two Phase Method of LPP

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  • เผยแพร่เมื่อ 17 ธ.ค. 2024

ความคิดเห็น • 29

  • @sudridh1229
    @sudridh1229 ปีที่แล้ว +1

    Excellent teacher 🎉🎉!
    What a mind-blowing concept clarity !!
    Please sir keep it up and upload more new lectures

    • @DrHarishGarg
      @DrHarishGarg  ปีที่แล้ว

      Thank you, I will.... Anyhow, most of the lectures already uploaded... See the playlist Optimization Techniques

  • @manpreetdhiman1735
    @manpreetdhiman1735 4 ปีที่แล้ว +3

    Very effective lecture...really very helpful ✌👌

  • @quanti1715
    @quanti1715 3 หลายเดือนก่อน

    Greatest in the scene

  • @its_adesh
    @its_adesh ปีที่แล้ว +1

    13:27 sir, among -4 and -1, -1 is most positive right!? I guess you meant to say most negative

  • @poojapriteeayush1263
    @poojapriteeayush1263 ปีที่แล้ว +1

    Sir in sol column -5 kaise aya 3 2 ka to pta h please clear my doubt sir

  • @mathswithsanjoy3969
    @mathswithsanjoy3969 2 ปีที่แล้ว

    Very helpful Sir

  • @user-nhjxoui9
    @user-nhjxoui9 3 ปีที่แล้ว +1

    Awesome lectures sir ....Thank you sir
    in this method phase 1, suppose if all the values are positive also no artificial variable is appears and "Z not equals to 0" ..... can we go to phase 2

    • @DrHarishGarg
      @DrHarishGarg  3 ปีที่แล้ว +1

      That case will not be happened... Because in Phase 1, your Z = A1+A2+.. and if in final optimal table of Phase 1, no artifical variable appears then its means A1=A2=A3=...=0 and hence Z = 0... On the other hand, if either of A_i is present in optimal table of Phase 1 then it means it is infeasible....
      However, that case will be possible as when A1 appears in table with Zero value in last solution column and hence Z = 0..such case called as redundant case. i.e., any two constraints are equal slopes.... Thanks & i hope it clear your doubt

  • @bishambuthyal56
    @bishambuthyal56 4 หลายเดือนก่อน

    Plz sir provide pdf whole lecture which u clear

  • @renukar2047
    @renukar2047 8 หลายเดือนก่อน

    Do we use two phase method for maximisation problem?

    • @DrHarishGarg
      @DrHarishGarg  8 หลายเดือนก่อน

      you can use for both minimization or maximization problems

  • @jnvststudy233
    @jnvststudy233 2 ปีที่แล้ว

    Sir ,zj - cj apne likha -1 at time 18:22 baad mien 1 ho gya hai kaise ... calculate kr k toh -1 hi aa raha hai...yeh shortcut method fail ho jata hai ky kahi kahi ?? Kyunki hm bhi ek question bnaye usme bhi unnecessary - aa rha tha...plz reply 🙏🙏

    • @DrHarishGarg
      @DrHarishGarg  2 ปีที่แล้ว +1

      This short cut method never fail.... Check the calculate value again... If it comes -1 then it means its typing error

    • @jnvststudy233
      @jnvststudy233 2 ปีที่แล้ว

      @@DrHarishGarg tysm sir 🤗🙏🙏

    • @dyatlov5958
      @dyatlov5958 7 หลายเดือนก่อน

      @jnvststudy233@DrHarishGarg New Rule- visualize pivot element as origin.Then We already know the elements which lies on the axes. Now first Use Normal 'V' determinant method (ad-bc) to find all other elements. Next,If the element is in 1st or 3rd quadrant wrt to the pivot element(origin),just change its sign to negetive, otherwise if its in 2nd or 4th quadrant wrt pivot, sign remains same:)

    • @DrHarishGarg
      @DrHarishGarg  7 หลายเดือนก่อน

      By both method, answer is same... Make sure, you divided by box element and calculate the determinant accurately, by starting from box element.

    • @dyatlov5958
      @dyatlov5958 7 หลายเดือนก่อน

      @@DrHarishGarg right sir, I was misinterpreting the rule before, now it's clear and it's working everywhere.Thank you

  • @samikshamaurya8212
    @samikshamaurya8212 2 ปีที่แล้ว

    Sir you said ,when problem is of Max type add artificial variable to Z and in min type subtract ...can u explain the reason behind it...as I thought if we have to max Z then why we are subtracting variable from Z ..we should have add

    • @sonamchauhan2968
      @sonamchauhan2968 ปีที่แล้ว

      adding artificial variable means adding penalty which implies that its refraining the solution from reaching optimal value so in max case, it's subtracted and vice versa.

  • @shreyamanjucha4621
    @shreyamanjucha4621 3 ปีที่แล้ว +1

    What is s

    • @DrHarishGarg
      @DrHarishGarg  3 ปีที่แล้ว +1

      +s is slack variable
      -s is surplus variable

    • @shreyamanjucha4621
      @shreyamanjucha4621 3 ปีที่แล้ว +1

      @@DrHarishGarg Thank you so much sir

    • @DrHarishGarg
      @DrHarishGarg  3 ปีที่แล้ว +1

      My pleasure.....
      Feel free to clear your all queries...
      Happy learning.

    • @shreyamanjucha4621
      @shreyamanjucha4621 3 ปีที่แล้ว

      @@DrHarishGarg sir one more doubt why didn't you include A1 and A2 in phase two

    • @DrHarishGarg
      @DrHarishGarg  3 ปีที่แล้ว +2

      There is always no need to include the A1,A2 in the phase 2 once phase 1 will be over .... Remember, phase 1 is used only to make and check the feasibility of the solution.
      But if you want to include it then you may, but after doing this, it will increase only the calculation nothing else...

  • @shrawankumarpatel2148
    @shrawankumarpatel2148 ปีที่แล้ว

    🙏🌷🌷🌷🙏