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**About this book :- **
**Precalculus A Problems Oriented Approach (6E) ** written by
** David Cohen, Ted Lee, David Sklar **

In summer 1981, I had the opportunity to TA a course called Precalculus, which used Dave’s notes (sometimes written by hand), rather than a traditional textbook. I had no idea what the term “precalculus” meant, and soon learned that these notes Dave had prepared were beginning to define, or at the least greatly expand, the subject. It was the beginning of a textbook.

Two years later, after graduating UCLA, I was pleased to receive a copy of Precalculus, by David Cohen. Dave had scribbled a note to me saying: “Thanks for the great coffee breaks.” I was pleased to see that some of our weekly problems appeared in that book (others showed up years later). More importantly, that book, and every other text Dave has ever written, talked to you. Even now, when I read this book, I can hear Dave talking, and sometimes even listening. Lecturing was never a part of Dave Cohen’s vocabulary. (Ross Rueger)

**Book Detail :- **
** Title: ** Precalculus A Problems Oriented Approach
** Edition: ** 6th
** Author(s): ** David Cohen, Ted Lee, David Sklar
** Publisher: ** Thomson
** Series: **
** Year: ** 2006
** Pages: ** 1191
** Type: ** PDF
** Language: ** English
** ISBN: ** 0-534-40212-7,0-534-40213-5
** Country: ** US

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**About Author :- **

Author ** David Cohen ** is Professor of Late of University of California, Los Angeles.

Author ** Theodore Lee ** from City College of San Francisco.

Author ** David Sklar ** from San Francisco State University.

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**Book Contents :- **
**Precalculus A Problems Oriented Approach (6E) ** written by
** David Cohen, Ted Lee, David Sklar **
cover the following topics.

1. Fundamentals

2. Equations and Inequalities

3. Functions

4. Polynomial and Rational Functions. Applications to Optimization

5. Exponential and Logarithmic Functions

6. Trigonometric Functions of Angles

7. Trigonometric Functions of Real Numbers

8. Analytical Trigonometry

9. Additional Topics in Trigonometry

10. Systems of Equations

11. The Conic Sections

12. Roots of Polynomial Equations

13. Additional Topics in Algebra

A.Appendix

A.1 Significant Digits

A.2 Properties of the Real Numbers

A 0.3 Is Irrational

b.Appendix

B.1 Review of Integer Exponents

B.2 Review of nth Roots

B.3 Review of Rational Exponents

B.4 Review of Factoring

B.5 Review of Fractional Expressions

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- Abstract Algebra
- Calculus
- Differential Equations
- Engineering Mathematics
- Linear Algebra
- Math Magic
- Real Analysis

- Basic Algebra
- Basic Mathematics
- Math History
- Math Formulas
- Mathematical Methods
- Number Theory
- Bio Mathematics
- Business Mathematics
- Probability & Statistics

**WORKSHEETS (Solved):- **

**SHORTCUT TRICKS (Division):- **

- Divisible by 2 Shortcut trick
- Divisible by 3 Shortcut trick
- Divisible by 4 Shortcut trick
- Divisible by 5 Shortcut trick
- Divisible by 6 Shortcut trick
- Divisible by 7 Shortcut trick
- Divisible by 8 Shortcut trick
- Divisible by 9 Shortcut trick
- Divisible by 10 Shortcut trick

**SHORTCUT TRICKS (Prime Number):- **

- Find the prime number from 1 to 100 just in 5 second (MATH PRIME NUMBER SHORTCUT TRICK from 1 to 100 number) ?
- Find a large number "A" is prime number or not (MATH PRIME NUMBER SHORTCUT TRICK By using Square Root method) ?
- Find the composite number from 1 to 100 just in 5 second (MATH COMPOSITE NUMBER SHORTCUT TRICK from 1 to 100 number) ?