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Simple question about direct integration 
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#1
Jun1806, 06:37 PM

P: 42

if I have a equation like this
I know I can integrate so that but this does not make sense to me because I could think of many U's that if you were to take the derivitive with respect to the squiggly varibale, still includes both variables 


#2
Jun1806, 06:52 PM

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P: 16,091

If the derivative with respect to xi includes both variables, then how does it look when you differentiate with respect to both xi and to eta?



#3
Jun1806, 07:00 PM

P: 42




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