This isn't homework. I was browsing through my old James Stewart multivariable calc textbook and am having a mental block concering an aspect of the "proof", shown in the file attachment, below. I've highlighted the portion giving me trouble.(adsbygoogle = window.adsbygoogle || []).push({});

My confusion concerns how the first integral (the line integral for C1) can be regarded as independent of x. The integral isn't independent ofrwhich I assume would be dependent on both x and y.

Thanks in advance...

Sorry - the file attachment was hard to read - here is a link instead...

http://home.comcast.net/~ut1880h/Files/stewart_theorem.jpg" [Broken]

jf

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# Vector calc proof question

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