My bad indeed; I misread the other book that I had and was missing the term with the partial derivative with respect to y...
\frac{\partial }{\partial u}(\frac{\partial z}{\partial x}) = \frac{\partial }{\partial x}(\frac{\partial z}{\partial x})\frac{\partial x}{\partial u}+\frac{\partial...
Hello,
the question I have arises from the 4th Edition of the book "Advanced Engineering Mathematics" written by K.A. Stroud. For those who owns the book, it is the example #2 starting at page 379. More precisely, the example is separated into two parts but the first one is very straight...