This is not a textbook nor does it pretend to be one, although the explanations-when present- are quite well written.  Learn multivariable calculus elsewhere, and then uses these excercises to reinforce that.<br>This is very much like all the authors other workbooks, inexpensive and a tremendous way to consolidate knowledge aquired elsewhere.<br><br>Very high value for money....after all, what is the point of LEARNING about multivariable calculus, if you cannot actually DO it.