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#1 2008-05-04 10:19:48

Moren
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Differentials

Hi, I have a question.  I know how to compute the differential in a function with 2 variables but I'm not sure what to do in a case like the following because there are 4 variables we need to take into consideration. 

Given below is a 1-form f in (x,y,u,v) space.

Find df and d(df).

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