By James Stewart, Lothar Redlin, Saleem Watson

ISBN-10: 0840068131

ISBN-13: 9780840068132

This most sensible promoting writer workforce explains suggestions easily and obviously, with out glossing over tricky issues. challenge fixing and mathematical modeling are brought early and bolstered all through, supplying scholars with a high-quality starting place within the rules of mathematical pondering. finished and flippantly paced, the ebook presents entire insurance of the functionality idea, and integrates an important quantity of graphing calculator fabric to aid scholars improve perception into mathematical principles. The authors' consciousness to aspect and readability, almost like present in James Stewart's market-leading Calculus booklet, is what makes this ebook the marketplace chief.

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**Additional info for Algebra and Trigonometry (3rd Edition)**

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By using letters to stand for numbers, we write formulas that help us to predict properties of real-world objects or processes. For example, an ocean diver knows that the deeper he dives, the higher the water pressure. The pattern of how pressure changes with depth can be expressed as an algebra formula (or model). 45d This formula can be used to predict water pressure at great depths (without having to dive to those depths). To get more information from this model, such as the depth at a given pressure, we need to know the rules of algebra, that is, the rules for working with numbers.

What about the product? (e) Are the actions of washing laundry and drying it commutative? (f) Give an example of a pair of actions that is commutative. (g) Give an example of a pair of actions that is not commutative. 46. Commutative and Noncommutative Operations We have seen that addition and multiplication are both commutative operations. (a) Is subtraction commutative? (b) Is division of nonzero real numbers commutative? (c) Are the actions of putting on your socks and putting on your shoes commutative?

P R O B L E M | Average Speed A driver sets out on a journey. For the first half of the distance, she drives at the leisurely pace of 30 mi/h; during the second half she drives 60 mi/h. What is her average speed on this trip? THINKING ABOUT THE PROBLEM It is tempting to take the average of the speeds and say that the average speed for the entire trip is 30 ϩ 60 ϭ 45 mi/h 2 Try a special case Ǡ But is this simple-minded approach really correct? Let’s look at an easily calculated special case. Suppose that the total distance traveled is 120 mi.

### Algebra and Trigonometry (3rd Edition) by James Stewart, Lothar Redlin, Saleem Watson

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