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    How do you do this question (part a)). I can get all the terms apart from the 8xy... one
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    (Original post by IMOChampion)
    How do you do this question (part a)). I can get all the terms apart from the 8xy... one
    here it is
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    (Original post by IMOChampion)
    here it is
    I will do the solution for your question for my own resources (I copied it down) but I am very busy at present.

    If somebody else is going to help you please post workings
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    (Original post by IMOChampion)
    here it is
    Intro calc sheet 3?

    Remember it is a function of 2 variables
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    (Original post by IMOChampion)
    here it is
    Please post some workings ...
    I have now done the question for my own resources (a bit long) and I suspect where you may have gone wrong (It also use to catch me when I was a student)
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    (Original post by IMOChampion)
    How do you do this question (part a)). I can get all the terms apart from the 8xy... one
    It may help if you show your method. If you've got all the other terms, chances are you've just made a silly mistake. I've just done the first part of the question and did become a little messy in places, so mistakes are easily made (especially with second order partials!). See if you can make the 8xy term by adding together other terms...
 
 
 
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Updated: October 27, 2015
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