David Cohen's PRECALCULUS, WITH UNIT-CIRCLE TRIGONOMETRY, Fourth Edition, focuses on teaching mathematics, 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.
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Editorial Reviews
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."
"One of the strengths of the series has been David's ability to make simple, clear, and reasoned arguments about the mathematical assertions…. David did a very subtle and powerful thing when he included difficult problems broken down into small, manageable steps." "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."
"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."
"One of the strengths of the series has been David's ability to make simple, clear, and reasoned arguments about the mathematical assertions…. David did a very subtle and powerful thing when he included difficult problems broken down into small, manageable steps." "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 was the author of the successful, well-respected precalculus series--COLLEGE ALGEBRA, ALGEBRA AND TRIGONOMETRY, PRECALCULUS: A PROBLEMS-ORIENTED APPROACH, and PRECALCULUS WITH UNIT CIRCLE TRIGONOMETRY. David Cohen was a Senior Lecturer at UCLA.
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Most Helpful Customer Reviews
6 of 7 people found the following review helpful:
5.0 out of 5 stars
Excellent - particularly for the interested learner,
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This review is from: Precalculus: With Unit Circle Trigonometry (with CD-ROM and iLrn(TM) Tutorial) (Hardcover)
After reading other reviews on this book here on Amazon, I chose it for my independent study of precalc. I don't regret the choice.
I find it particularly well-suited for my learning preferences. Accordingly, this will be a text you will love if: -you like learning systematically; that is, starting from simple concepts and rapidly building upon them -you take the time to work many of the problems; the problems are expertly written and do wonders at isolating specific concepts and allowing your mind to be aware of them and master them. -you enjoy solving problems of a mathematical and logical nature -you have an interest in the subject that may be slightly broader than simply gaining mastery. On the last item, the author does an excellent job of weaving tidbits of the miscellaneous and sundry of mathematics and using them to keep the mind interested while also teaching a lesson. Often these concepts are treated within an exercise. There is a good balance between including this extra information and sticking to the core subject. The extra information is never off-topic and keeps the material from becoming too dry while not being annoyingly inserted for the primary purpose of filling space. I am not a great fan of lengthy and marginally useful vignettes in textbooks. If this is what you're looking for in a precalc textbook, this is the book for you.
1 of 1 people found the following review helpful:
1.0 out of 5 stars
Awkward Book,
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This review is from: Precalculus: With Unit Circle Trigonometry (with CD-ROM and iLrn(TM) Tutorial) (Hardcover)
At first glance the book appears to cover everything one would need to master before entering calculus;however,this book has the worst examples and ask students to take leaps without explanations of what is going on. The paragraphs are poorly written and do little to expand on what the author is actually trying to convey.The problems in the exercise set are inane and tedious with little relation to the examples given in the opening for each sub-chapter.
Seriously if this is the book you are learning from drop the class or get a supplementary book to help out. Also do not even try to mark with pen or highlight in this book it shows right through the pages.
5.0 out of 5 stars
In great shape!,
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This review is from: Precalculus: With Unit Circle Trigonometry (with CD-ROM and iLrn(TM) Tutorial) (Hardcover)
I expected this book to be a lot more worn than it was, but it was in great condition. It was also a lot cheaper than I could get it anywhere else. Great buy!
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- Math Coach: A Parent's Guide to Helping Children Succeed in Math by Wayne A. Wickelgren in Back Matter
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