New PDF release: Algebra and Trigonometry with Analytic Geometry, Classic

By Earl Swokowski, Jeffery A. Cole

ISBN-10: 0495559717

ISBN-13: 9780495559719

The newest version within the hugely revered Swokowski/Cole precalculus sequence keeps the weather that experience made it so well-liked by teachers and scholars alike: its exposition is apparent, the time-tested workout units function quite a few purposes, its uncluttered format is beautiful, and the trouble point of difficulties is suitable and constant. Mathematically sound, ALGEBRA AND TRIGONOMETRY WITH ANALYTIC GEOMETRY, vintage variation, 12E, successfully prepares scholars for extra classes in arithmetic via its very good, time-tested challenge units

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Extra resources for Algebra and Trigonometry with Analytic Geometry, Classic Edition

Example text

The yearly survival percentages for yearlings and adults are 80% and 90%, respectively. The male-female ratio is one in all age classes. 2 Exponents and Radicals If n is a positive integer, the exponential notation an, defined in the following chart, represents the product of the real number a with itself n times. We refer to an as a to the nth power or, simply, a to the n. The positive integer n is called the exponent, and the real number a is called the base. Exponential Notation General case (n is any positive integer) a1 ෇ a a2 ෇ a и a a3 ෇ a и a и a a6 ෇ a и a и a и a и a и a u an ෇ a и a и a и иии и a n factors of a Special cases The next illustration contains several numerical examples of exponential notation.

1 1 1 5 1 ͙35 32 ϭ 2, since ͑ 2 ͒ ϭ 323. 2Ϫ8 ϭ Ϫ2, since ͑Ϫ2͒ ϭ Ϫ8. 4 2Ϫ16 is not a real number. 216 Note that 216 Ϯ4, since, by definition, roots of positive real numbers are positive. ” n To complete our terminology, the expression 2 a is a radical, the number a is the radicand, and n is the index of the radical. The symbol 2 is called a radical sign. 3 If 2a ϭ b, then b2 ϭ a; that is, ͑ 2a͒2 ϭ a. If 2 a ϭ b, then b3 ϭ a, or 3 3 ͑ 2 a ͒ ϭ a. Generalizing this pattern gives us property 1 in the next chart.

I) The absolute value of x is greater than 7. 8 (a) b is positive. (b) s is nonpositive. (c) w is greater than or equal to Ϫ4. 1 1 (d) c is between 5 and 3 . (e) p is not greater than Ϫ2. (f ) The negative of m is not less than Ϫ2. 1 (g) The quotient of r and s is at least 5 . (h) The reciprocal of f is at most 14. ( i ) The absolute value of x is less than 4. Exer. 7–8: Express the statement as an inequality. 7 (a) x is negative. Exer. 9–14: Rewrite the number without using the absolute value symbol, and simplify the result.

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Algebra and Trigonometry with Analytic Geometry, Classic Edition by Earl Swokowski, Jeffery A. Cole

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