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# Solutions for Chapter 1.4: Functions

## Full solutions for Precalculus | 7th Edition

ISBN: 9780618643448

Solutions for Chapter 1.4: Functions

Solutions for Chapter 1.4
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##### ISBN: 9780618643448

Since 116 problems in chapter 1.4: Functions have been answered, more than 30678 students have viewed full step-by-step solutions from this chapter. Chapter 1.4: Functions includes 116 full step-by-step solutions. Precalculus was written by and is associated to the ISBN: 9780618643448. This textbook survival guide was created for the textbook: Precalculus, edition: 7. This expansive textbook survival guide covers the following chapters and their solutions.

Key Calculus Terms and definitions covered in this textbook
• Algebraic model

An equation that relates variable quantities associated with phenomena being studied

• Annuity

A sequence of equal periodic payments.

• Branches

The two separate curves that make up a hyperbola

• Characteristic polynomial of a square matrix A

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

• Conic section (or conic)

A curve obtained by intersecting a double-napped right circular cone with a plane

• Differentiable at x = a

ƒ'(a) exists

• Factoring (a polynomial)

Writing a polynomial as a product of two or more polynomial factors.

• Finite series

Sum of a finite number of terms.

• Independent events

Events A and B such that P(A and B) = P(A)P(B)

• Inductive step

See Mathematical induction.

• Inequality symbol or

<,>,<,>.

• Linear regression equation

Equation of a linear regression line

• Modulus

See Absolute value of a complex number.

• Numerical derivative of ƒ at a

NDER f(a) = ƒ1a + 0.0012 - ƒ1a - 0.00120.002

• One-to-one rule of logarithms

x = y if and only if logb x = logb y.

• Positive numbers

Real numbers shown to the right of the origin on a number line.

• Real zeros

Zeros of a function that are real numbers.

• Replication

The principle of experimental design that minimizes the effects of chance variation by repeating the experiment multiple times.

• Stem

The initial digit or digits of a number in a stemplot.

• Variable

A letter that represents an unspecified number.

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