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David Cohen's PRECALCULUS: A PROBLEMS-ORIENTED APPROACH, Sixth Edition, focuses on teaching mathematics by using a graphical perspective throughout to provide a visual understanding of college algebra and trigonometry. The author is known for his clear writing style and the numerous quality exercises and applications he includes in his respected texts. In this new edition, graphs, visualization of data, and functions are now introduced much earlier and receive greater emphasis. Many sections now contain more examples and exercises involving applications and real-life data. While this edition takes the existence of the graphing calculator for granted, the material is arranged so that one can teach the course with as much or as little graphing utility work as he/she wishes.
- Sales Rank: #703506 in Books
- Brand: Brand: Cengage Learning
- Published on: 2004-12-14
- Original language: English
- Number of items: 1
- Dimensions: 1.78" h x 8.24" w x 10.08" l, 5.16 pounds
- Binding: Hardcover
- 1184 pages
- Used Book in Good Condition
Review
"The quantity and quality of the exercises are the reasons why I think that Cohen's book is my favorite algebra and precalculus book ever…. Both the quantity and quality of the exercises of Cohen's book are first class and the problems in each section are reflective of the concepts being taught. As far as I am concerned, the quality of both his algebra text and precalculus text are way above anything on the market that I've seen."
"The mini projects are excellent and can be used for collaborative learning…. I think the writing style of an already well-written book has been improved."
"This text is one of the most challenging precalculus books I have seen, but I like that because it gives students the opportunity to be very well prepared for calculus. The presentations are rigorous, precise, and detailed, but written in a way that students can follow fairly well. The exercises range from simple to complex and include not only applications to other disciplines but to other areas of mathematics as well." "One of the main reasons I continue to use this author's texts is that I receive more compliments from my students on his books than I have on any other texts."
"Overall, the quantity and quality of the exercises in Cohen's texts are outstanding. The different levels of exercises--A, B, and C levels--make an excellent transition from skill development to concept development."
"The new authors have done a nice job in reorganizing the material in Chapter 6. Instructors familiar with earlier editions of Cohen's books will find the transition seamless."
About the Author
David Cohen, a senior lecturer at UCLA, was the original author of the successful, well-respected precalculus series--COLLEGE ALGEBRA, ALGEBRA AND TRIGONOMETRY, PRECALCULUS: A PROBLEMS-ORIENTED APPROACH, and PRECALCULUS: WITH UNIT CIRCLE TRIGONOMETRY.
Most helpful customer reviews
6 of 10 people found the following review helpful.
jumbled = confusing = easily forgotten lessons
By annoyed dad
My son was assigned this textbook last year in a junior college math class. He and his classmates found it frustrating. I had to spend hours tutoring him and several of his friends. As a result, I became intimately familiar with Cohen's Precalculus and the confusion it caused students.
My opinion of this book is much like that of the first and last reviewers. There is no discernible order to the chapters; the book doesn't progress in any logical way from what the students have just learned to what immediately follows. (For example: Why didn't the chapter on linear equations immediately follow the chapter on matrices? That's the whole point of matrices--we use them to solve linear equations!).
Sad to say, this book is just a big jumble of miscellaneous material lumped together under the rubric of precalculus. I don't know why the author and publisher chose to arrange the material this way. A previous reviewer suggests that the market forces textbook authors to include everything but the kitchen sink. Even if true, this explanation is irrelevant: it might explain why the book crams so much between its covers, but it doesn't explain the haphazard arrangement of the material. The book certainly didn't do my son or his classmates much good. Although they managed to memorize and regurgitate their lessons well enough to pass the final exam, the mathematical knowledge they gleaned wasn't retained very well because it was never put into any kind of logical order. This book provided no framework that made sense of the random lessons they received. In my opinion, that is not a good way to teach anything, especially an abstract subject like math.
18 of 23 people found the following review helpful.
Clear, yet Strangely Incoherent
By A Customer
David Cohen does an excellent job in the individual chapters explaining this or that component of precalculus. But the book as a whole is strangely incoherent. The order of the chapters seems almost random, as the book jumps from topic to disconnected topic. For example, we are given a clear account of how to work matrices...and then are never told or shown WHY we bothered learning it in the first place--we're hustled off to another unrelated topic. So-called theorists in our fad-ridden education departments call this technique "spiraling," a tactic designed to keep the little kiddies on their toes and off balance and thus more receptive to exploring new things. Or something like that. In actual practice, however, as well as according to common sense, the result of "spiraling" is only frustration and confusion. If Cohen would rearrange the order of the chapters and provide some connective tissue, this would probably make it a really good textbook.
18 of 21 people found the following review helpful.
Clear and Detailed
By A Customer
I used this text as preparation for university calculus. Each chapter has a high level of rigor and clearly explains the mechanics of solving problems. The text ignores extensive discussion of applications, which is a good thing. References to applications in introductory math texts always strike me as ad hoc, distracting and useless. If you want to know why some particular analytic method is useful in the real world then you need to study up in the particular discipline. If you want a straight and detailed exposition of methods then this is the text. Much stronger than the Larson texts on college algebra/trigonometry.
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