# How Euler Did It: Mixed Partial Derivatives

Euler was the first person to recognize that mixed second partial derivatives are equal (in general) -- except that he discussed differentials instead. This site is one of Ed Sandifer's columns, How Euler Did It from May, 2004.
Identifier:
http://www.maa.org/editorial/euler/How%20Euler%20Did%20It%2007%20Mixed%20Partial%20Derivatives.pdf
Rating:
Creator(s):
Ed Sandifer
Cataloger:
Lang Moore
Publisher:
Mathematical Association of America
Rights: