April 2019
Intermediate to advanced
208 pages
5h 59m
English
The material in this appendix can be found in 128, 8. A function
is said to be continuously differentiable (
) at a point
if the partial derivatives
exist and are continuous at
for
and
. The function is continuously differentiable on a set
if it is continuously differentiable at every point of
. A function belongs to
,
on if has continuous partial derivatives ...