# Solutions for Chapter 2: FUNCTIONS AND GRAPHS

## Full solutions for Precalculus: Functions and Graphs | 12th Edition

ISBN: 9780840068576

Solutions for Chapter 2: FUNCTIONS AND GRAPHS

Solutions for Chapter 2
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##### ISBN: 9780840068576

Precalculus: Functions and Graphs was written by and is associated to the ISBN: 9780840068576. Chapter 2: FUNCTIONS AND GRAPHS includes 622 full step-by-step solutions. Since 622 problems in chapter 2: FUNCTIONS AND GRAPHS have been answered, more than 9151 students have viewed full step-by-step solutions from this chapter. This textbook survival guide was created for the textbook: Precalculus: Functions and Graphs, edition: 12. This expansive textbook survival guide covers the following chapters and their solutions.

Key Calculus Terms and definitions covered in this textbook
• Angle between vectors

The angle formed by two nonzero vectors sharing a common initial point

• Arc length formula

The length of an arc in a circle of radius r intercepted by a central angle of u radians is s = r u.

• Components of a vector

See Component form of a vector.

• Compounded annually

See Compounded k times per year.

• Dependent event

An event whose probability depends on another event already occurring

• Descriptive statistics

The gathering and processing of numerical information

• Difference of functions

(ƒ - g)(x) = ƒ(x) - g(x)

• Graph of a function ƒ

The set of all points in the coordinate plane corresponding to the pairs (x, ƒ(x)) for x in the domain of ƒ.

• Linear inequality in two variables x and y

An inequality that can be written in one of the following forms: y 6 mx + b, y … mx + b, y 7 mx + b, or y Ú mx + b with m Z 0

• Nappe

See Right circular cone.

• Negative angle

Angle generated by clockwise rotation.

• Number line graph of a linear inequality

The graph of the solutions of a linear inequality (in x) on a number line

• Polar coordinate system

A coordinate system whose ordered pair is based on the directed distance from a central point (the pole) and the angle measured from a ray from the pole (the polar axis)

• Randomization

The principle of experimental design that makes it possible to use the laws of probability when making inferences.

• Rational expression

An expression that can be written as a ratio of two polynomials.

• Right circular cone

The surface created when a line is rotated about a second line that intersects but is not perpendicular to the first line.

• Subtraction

a - b = a + (-b)

• Tree diagram

A visualization of the Multiplication Principle of Probability.

• Unit vector in the direction of a vector

A unit vector that has the same direction as the given vector.

• xy-plane

The points x, y, 0 in Cartesian space.

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