Right, but they'll be adding nine more, so check back.

In the mean time, it's still good for anyone who wants to learn physics to go back to a beginning algebra book and make sure it's mastered, hey?

I've already realized that I had forgotten a method for finding a least common denominator (I've always been able to get by just playing with multiplying the numbers in my head... they make it so easy).

Shoot. That's because it was recently featured on Digg. There's no mirror because, although it's free, it's still copyrighted. It'll be back up another day.

my websitye ahs several freely downloadable books.

also in general the quality of a book is in many cases in versely related to th price, so you can find a large number of excellent books on the web used for very cheap price that are vastly superior to the costly ones that schools use.

at my school quite a few advanced graduate courses (intended for PhD and advanced master's students) have no required textbook, just online notes and other resources.

This is partly because there are very few textbooks which cover all the content the professor wishes to cover, partly due to the fact that much of the material is still in the research phase and so the primary sources of information are formal journal papers and informal research notes, and partly because buying textbooks is ridiculous when free high-quality resources are available.

You have to always make sure that what you read has no errors in it, but you have to do that with standard textbooks also. I remember when I took calculus 3 I discovered an error in one of the examples in the textbook (which was in 7th edition and presumably reviewed by tens of thousands of students and teachers)

the gatec=h website ahd a great book by a math prof and a oprof of mechanixl enginering on tensors. they say they almost ahd to relearn the subject before using it in ersearch due to the old fashioned way it was first atught to therm. i have been arguing this point now for over 2 years here. here is the confirmation from non math types.

[Bowen and Wang]

"In preparing this two volume work our intention is to present to Engineering and Science
students a modern introduction to vectors and tensors. Traditional courses on applied mathematics
have emphasized problem solving techniques rather than the systematic development of concepts.
As a result, it is possible for such courses to become terminal mathematics courses rather than
courses which equip the student to develop his or her understanding further.

As Engineering students our courses on vectors and tensors were taught in the traditional
way. We learned to identify vectors and tensors by formal transformation rules rather than by their
common mathematical structure. The subject seemed to consist of nothing but a collection of
mathematical manipulations of long equations decorated by a multitude of subscripts and
superscripts. Prior to our applying vector and tensor analysis to our research area of modern
continuum mechanics, we almost had to relearn the subject. Therefore, one of our objectives in
writing this book is to make available a modern introductory textbook suitable for the first in-depth
exposure to vectors and tensors. Because of our interest in applications, it is our hope that this
book will aid students in their efforts to use vectors and tensors in applied areas. "