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# Solutions for Chapter 2.6: Rational Functions

## Full solutions for Precalculus | 7th Edition

ISBN: 9780618643448

Solutions for Chapter 2.6: Rational Functions

Solutions for Chapter 2.6
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##### ISBN: 9780618643448

This expansive textbook survival guide covers the following chapters and their solutions. Since 93 problems in chapter 2.6: Rational Functions have been answered, more than 28639 students have viewed full step-by-step solutions from this chapter. Precalculus was written by and is associated to the ISBN: 9780618643448. Chapter 2.6: Rational Functions includes 93 full step-by-step solutions. This textbook survival guide was created for the textbook: Precalculus, edition: 7.

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

An equation that relates variable quantities associated with phenomena being studied

• Arctangent function

See Inverse tangent function.

• Binomial

A polynomial with exactly two terms

• Combinations of n objects taken r at a time

There are nCr = n! r!1n - r2! such combinations,

• Continuous function

A function that is continuous on its entire domain

• Distributive property

a(b + c) = ab + ac and related properties

• Domain of validity of an identity

The set of values of the variable for which both sides of the identity are defined

• equation of a parabola

(x - h)2 = 4p(y - k) or (y - k)2 = 4p(x - h)

• Implicitly defined function

A function that is a subset of a relation defined by an equation in x and y.

• Inverse of a matrix

The inverse of a square matrix A, if it exists, is a matrix B, such that AB = BA = I , where I is an identity matrix.

• Matrix, m x n

A rectangular array of m rows and n columns of real numbers

• Numerical derivative of ƒ at a

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

• Probability distribution

The collection of probabilities of outcomes in a sample space assigned by a probability function.

• Regression model

An equation found by regression and which can be used to predict unknown values.

• 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.

• Row echelon form

A matrix in which rows consisting of all 0’s occur only at the bottom of the matrix, the first nonzero entry in any row with nonzero entries is 1, and the leading 1’s move to the right as we move down the rows.

• Sum identity

An identity involving a trigonometric function of u + v

• Window dimensions

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

• Xmax

The x-value of the right side of the viewing window,.

• Zero of a function

A value in the domain of a function that makes the function value zero.

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