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# Solutions for Chapter 8.4: Precalculus 5th Edition ## Full solutions for Precalculus | 5th Edition

ISBN: 9780321837349 Solutions for Chapter 8.4

Solutions for Chapter 8.4
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##### ISBN: 9780321837349

This expansive textbook survival guide covers the following chapters and their solutions. Since 9 problems in chapter 8.4 have been answered, more than 10422 students have viewed full step-by-step solutions from this chapter. Precalculus was written by and is associated to the ISBN: 9780321837349. Chapter 8.4 includes 9 full step-by-step solutions. This textbook survival guide was created for the textbook: Precalculus, edition: 5.

Key Calculus Terms and definitions covered in this textbook
• Angle of elevation

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

• Combinatorics

A branch of mathematics related to determining the number of elements of a set or the number of ways objects can be arranged or combined

• Common difference

See Arithmetic sequence.

• Composition of functions

(f ? g) (x) = f (g(x))

• Correlation coefficient

A measure of the strength of the linear relationship between two variables, pp. 146, 162.

• Extracting square roots

A method for solving equations in the form x 2 = k.

• First quartile

See Quartile.

• Graph of an inequality in x and y

The set of all points in the coordinate plane corresponding to the solutions x, y of the inequality.

• Grapher or graphing utility

Graphing calculator or a computer with graphing software.

• Logistic growth function

A model of population growth: ƒ1x2 = c 1 + a # bx or ƒ1x2 = c1 + ae-kx, where a, b, c, and k are positive with b < 1. c is the limit to growth

• Multiplicative inverse of a matrix

See Inverse of a matrix

• Perpendicular lines

Two lines that are at right angles to each other

• Plane in Cartesian space

The graph of Ax + By + Cz + D = 0, where A, B, and C are not all zero.

Any one of the four parts into which a plane is divided by the perpendicular coordinate axes.

• Reduced row echelon form

A matrix in row echelon form with every column that has a leading 1 having 0’s in all other positions.

• Remainder polynomial

See Division algorithm for polynomials.

• RRAM

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

• Standard form: equation of a circle

(x - h)2 + (y - k2) = r 2

• Vertical translation

A shift of a graph up or down.

• xz-plane

The points x, 0, z in Cartesian space.

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