Hello. Excuse my english, it is not my natal tongue. I have a question about real functions of two real variables.(adsbygoogle = window.adsbygoogle || []).push({});

Does someone knows how to use differentiation under the integral sign to proof the equality of mixed partials ???

I have read said proof in a book of an english author, David Stirling (Mathematical analysis: a fundamental and straightforward approach), and it would be great if someone here could throw some light on it...

Regards,

Castilla.

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# Using differentiation under integral sign to proof equality of mixed partials

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