**Marsden
and Tromba, "Vector Calculus", 5th edition:**
The website includes an "Internet Supplement": a pdf
file (2628KB) containing

some more technical proofs, some interesting applications, and
a sample examination with complete solutions.

http://bcs.whfreeman.com/marsdenvc5e/

**3D-XplorMath**
is a mathematical visualization program for Macintosh

computers running version 9 or later of MacOS. It can be used
to explore many interesting mathematical objects, ranging from
planar and space curves to polyhedra and surfaces to ordinary
and partial differential equations, and fractals:

http://rsp.math.brandeis.edu/3D-XplorMath/index.html

**3D-XplorMath
Galleries **

This
contains pictures of many interesting surfaces produced by

Richard Palais's program 3D-XplorMath:

http://rsp.math.brandeis.edu/3D-XplorMath/TopLevel/gallery.html

**Web
Links for Minimal Surfaces**