Limiting factors – Linear Programming
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wow!wonderful,comprehensive lectures!!thanks!
The topic was explained really well in a very clear manner. I did not understand this before- now I’m really confident.
I fully agree- theoretically the whole graph is a waste of time.
@malka77, the graph is not a waste of time for two reasons:
One is that the maximum could occur at any of the corners of the feasible region. The only way that you can do it without the graph is solve for when every two constraints cross, and then check which ones of those are not feasible because they break one of the other constraints. (The lecture explains why this is so)
Secondly, the examiner regularly tests you on the graph – either by asking you to draw it, or by giving you the graph in the exam.
@johnmoffat,
What I meant to say was that there are two methods- either through graph or by using simultaneous equations. Since the graph requires you to use simultaneous equations- is it not better to just study that method? That is why I do not understand why the use of graphs is required as part of the specification.
@malka77, You still need a graph, because suppose there are three constraints. Each pair of lines crosses at a point and so there are three points you will find using simultaneous equations. However, one of those points could well be outside the feasible region (because of the other constraint). Without having drawn the graph you would not know this. (You could check, but then because of the time taken, you would have been quicker drawing the graph and then only need one simultaneous equation)
Dear tutor,
I liked the way you explained. One thing I didnn’t get is why did u take the point B when it has nothing to do at all….I mean the way we took out maximum contribution was a simple mathematical solution…So why take B and run out of time???
Nice lecture
iam looking for the f5 limiting factor and em confused if this xample is frm f2 book or f5 book??
it used to be in F2 & F5 syllabus,
Now, it’s only in F5
really helpful, thank u
thanks keep it up
i’v been missing in action. opentuition is absolutely great! but whats happening to linner programming? its not playing throught.
this lectures is very very fantastic
o wow this is great,well explained,thank you
Excellent lectures, opentuition is the best!!!
Thanks guys.
excellent
can we solve these equations directly on calculator and putting on the answers directly of equations, is it OK ? ?
syedazmat, at F5 – i dont think it would be ok as every step would have a mark and most marks are being able to show to the examiner that we know what we are doing..
good job
I heard from kaplan tutor there will be a graph paper given for Jun 2011 exam,does that mean that we shold be perfect in our graph?
I heard from kaplan toutur there will be a graph paper given for Jun 2011 exam,does that mean that we shold be perfect in our graph?
Isn’t there any other way other than drawing an iso-contribution line, as we don’t always draw an perfect graph and a simple change in the angles could alter the solution?
My lecture stopped aprubtly @ 27 mins any help?
I have tried but the lecture is not running on my computer as it was running before?