Optimising 2 variable s to maximise a third

[taylrl3]

Hi,

I am sure there must be something already on here about this kind of thing so if you could point me in that direction that is fine, or to a site anywhere.

Basically I have three columns of data, let's say Column A, Column B and Column C. Column A is dependent upon both Columns B & C (directly proportional to Column B and inversely proportional to Column C). What I would like to be able to do is to find the optimum values for Columns B & C such that Column A is maximised.

Thanks in advance!

 

[mathman]

Your question is too vague.

Do you want to find the max. entry of A? If not, what is it that is maximized?
Are the entries of B and C fixed? If not, what are these entries dependent on?