By Ron Larson

ISBN-10: 0618958479

ISBN-13: 9780618958474

Designed particularly for enterprise, economics, or life/social sciences majors, short Calculus: An utilized strategy, 8/e, motivates scholars whereas fostering knowing and mastery. This short textual content emphasizes built-in and fascinating functions that convey scholars the real-world relevance of themes and ideas. a number of pedagogical features--from algebra evaluation to check tips--provide additional counsel and practice.The 8th version builds upon its purposes emphasis via up-to-date routines and suitable examples. utilized difficulties drawn from executive resources, undefined, present occasions, and different disciplines supply well-rounded examples and attract different pursuits. furthermore, the short Calculus application bargains a robust aid package--including CL MATHSpace Instructor/Student web content and direction administration instruments, educational DVDs, and suggestions manuals--that permits scholars to study the fabric independently and preserve key thoughts.

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**Example text**

Simplify. Use a calculator. 83 looks about right. ✓CHECKPOINT 3 Find the distance between the points ͑Ϫ2, 1͒ and ͑2, 4͒. ■ Copyright 2009 Cengage Learning, Inc. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. 1 Example 4 y 8 37 Verifying a Right Triangle Use the Distance Formula to show that the points ͑2, 1͒, ͑4, 0͒, and ͑5, 7͒ are vertices of a right triangle. 8. Using the Distance Formula, you can find the lengths of the three sides as shown below. 6 d1 ϭ Ί͑5 Ϫ 2͒2 ϩ ͑7 Ϫ 1͒2 ϭ Ί9 ϩ 36 ϭ Ί45 d2 ϭ Ί͑4 Ϫ 2͒2 ϩ ͑0 Ϫ 1͒2 ϭ Ί4 ϩ 1 ϭ Ί5 d3 ϭ Ί͑5 Ϫ 4͒2 ϩ ͑7 Ϫ 0͒2 ϭ Ί1 ϩ 49 ϭ Ί50 d1 4 The Cartesian Plane and the Distance Formula d3 2 Because (2, 1) d2 2 (4, 0) 4 x 6 d12 ϩ d 22 ϭ 45 ϩ 5 ϭ 50 ϭ d 32 you can apply the converse of the Pythagorean Theorem to conclude that the triangle must be a right triangle.

2x 2 ϩ 3x Ϫ 4 8. 3x 2 Ϫ 8x Ϫ 4 In Exercises 9–18, write the second-degree polynomial as the product of two linear factors. 9. x2 Ϫ 4x ϩ 4 10. x 2 ϩ 10x ϩ 25 11. 4x 2 ϩ 4x ϩ 1 12. 9x 2 Ϫ 12x ϩ 4 13. 3x2 Ϫ 4x ϩ 1 14. 2x 2 Ϫ x Ϫ 1 15. 3x 2 Ϫ 5x ϩ 2 16. x 2 Ϫ xy Ϫ 2y 2 17. x 2 Ϫ 4xy ϩ 4y 2 18. a 2 b 2 Ϫ 2abc ϩ c 2 57. Ίx 2 Ϫ 7x ϩ 12 58. Ίx 2 Ϫ 8x ϩ 15 59. 60. Ί3x2 Ϫ 10x ϩ 3 Ί5x2 ϩ 6x ϩ 1 In Exercises 61– 64, use synthetic division to complete the indicated factorization. 61. x 3 Ϫ 3x 2 Ϫ 6x Ϫ 2 ϭ ͑x ϩ 1͒͑ 62.

At first glance, it may appear from this definition that the absolute value of a real number can be negative, but this is not possible. For example, let a ϭ Ϫ3. Then, because Ϫ3 < 0, you have ԽaԽ ϭ ԽϪ3Խ ϭ Ϫ ͑Ϫ3͒ ϭ 3. The following properties are useful for working with absolute values. Properties of Absolute Value Խ Խ Խ ԽԽ Խ a a ϭ Խ Խ, b b ԽbԽ ԽanԽ ϭ ԽaԽn Ίa2 ϭ ԽaԽ 1. Multiplication: ab ϭ a b 2. Division: 3. Power: 4. Square root: ԽԽ 0 Be sure you understand the fourth property in this list. A common error in algebra is to imagine that by squaring a number and then taking the square root, you come back to the original number.

### Brief Calculus: An Applied Approach (8th Edition) by Ron Larson

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