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Hi, how do you determine which product should go on which axis?
For Ex1 of Chp6 pg 20 of the notes my graph had standard on the x-axis and executive on the y-axis and I’m getting a max cont’n of $210. However, the solution has the products on axes opposite to my own and the max cont’n is $225.
To avoid this in the exam, can you please tell me how the placement of products on axes is determined?
It does not matter which axis you use for each product.
If you use the axes the other way round, then your graph will look different than the answer, but so will the objective line – you should still end up with the same maximum solution and the same maximum profit.
Check your graph and your objective line carefully. Again, even if you put the products on the other axes the final solution should be the same.
please solve this equations.
y1= shadow price for vitamin b
y2= shadow price for vitamin cThe dual constraints become
20y1+ 40y2=60
30y1+30y2=80can you please solve this equations?
I really have no idea why you want to solve these equations, but anyway….
y1 = 7/3 (2.33)
y2 = 1/3 (0.33)Thanks John. I’ve rechecked my ISO line and it actually leaves my feasible region at point C. I previously had it leaving at point B. My optimal mix and maximum profit does indeed come back to the same as the solution.
Again, thanks so much for your assistance.
I use a citizen SRP-145T, but any are fine as long as they have a x^y button!
A lecture on chapter 8 is waiting to be uploaded – it will be there in a few days.
Chpater 9 is just revision of things from paper F2 and so there are no lectures.
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Hi, most of the examples on linear programming relates to objective of maximising contribution, I want to find out if a question on cost minimisation can be set for F5 candidates. For the avoidance of doubt, can the examiner ask candidates to find how cost can be minimised ? Secondly, does the F5 syllabus cover the objective of Cost minimisation? Thank you.
Yes – you can be asked cost minimisation.
The approach is exactly the same. Most of the constraints will be greater than (rather than less than) and the objective line becomes the total cost (instead of contribution) and you want to get it as close to the origin as possible (instead of furthest away).
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Thanx very much for responding to my enquiries on cost minimisation.
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Thanx very much for responding to my enquiries on cost minimisation.
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