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# Solutions for Chapter 2: Precalculus 9th Edition

## Full solutions for Precalculus | 9th Edition

ISBN: 9780321716835

Solutions for Chapter 2

Solutions for Chapter 2
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##### ISBN: 9780321716835

This expansive textbook survival guide covers the following chapters and their solutions. Since 72 problems in chapter 2 have been answered, more than 11092 students have viewed full step-by-step solutions from this chapter. Precalculus was written by and is associated to the ISBN: 9780321716835. This textbook survival guide was created for the textbook: Precalculus, edition: 9. Chapter 2 includes 72 full step-by-step solutions.

Key Calculus Terms and definitions covered in this textbook
• Acceleration due to gravity

g ? 32 ft/sec2 ? 9.8 m/sec

• Angle of depression

The acute angle formed by the line of sight (downward) and the horizontal

• Characteristic polynomial of a square matrix A

det(xIn - A), where A is an n x n matrix

• equation of a hyperbola

(x - h)2 a2 - (y - k)2 b2 = 1 or (y - k)2 a2 - (x - h)2 b2 = 1

• Factored form

The left side of u(v + w) = uv + uw.

• Function

A relation that associates each value in the domain with exactly one value in the range.

• Integers

The numbers . . ., -3, -2, -1, 0,1,2,...2

• Inverse relation (of the relation R)

A relation that consists of all ordered pairs b, a for which a, b belongs to R.

• LRAM

A Riemann sum approximation of the area under a curve ƒ(x) from x = a to x = b using x1 as the left-hand endpoint of each subinterval

• Mathematical model

A mathematical structure that approximates phenomena for the purpose of studying or predicting their behavior

• Natural numbers

The numbers 1, 2, 3, . . . ,.

• Open interval

An interval that does not include its endpoints.

• Parallel lines

Two lines that are both vertical or have equal slopes.

• Pie chart

See Circle graph.

• Real axis

See Complex plane.

• Rectangular coordinate system

See Cartesian coordinate system.

• Secant line of ƒ

A line joining two points of the graph of ƒ.

• Standard deviation

A measure of how a data set is spread

• Window dimensions

The restrictions on x and y that specify a viewing window. See Viewing window.

• Wrapping function

The function that associates points on the unit circle with points on the real number line

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