![]() It takes 333 pages to get to Surface Integrals, Then by 370 has gone on a tangent about (simple) matrices, then mappings, and by 419 determinants, why is this here? To build up to the Jacobian on page 434. Why? He doesn't introduce any alternative notations, now I don't expect an author to do this usually but with multivariable calculus I expect a least a footnote saying "some may write this with a single integral and with respect to dA" for example. I do not recommend this is your only textbook on the subject, I would treat this as supplementary, a source of practice questions and so forth. Please do not think this is a bad book, it is a great book by any measure just. I love Lang's books, I have half a shelf devoted to him but this is the weakest book I have by him by far. ![]()
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