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# Solutions for Chapter 8.5: Precalculus 5th Edition

## Full solutions for Precalculus | 5th Edition

ISBN: 9780321837349

Solutions for Chapter 8.5

Solutions for Chapter 8.5
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##### ISBN: 9780321837349

Precalculus was written by and is associated to the ISBN: 9780321837349. This textbook survival guide was created for the textbook: Precalculus, edition: 5. This expansive textbook survival guide covers the following chapters and their solutions. Since 11 problems in chapter 8.5 have been answered, more than 11092 students have viewed full step-by-step solutions from this chapter. Chapter 8.5 includes 11 full step-by-step solutions.

Key Calculus Terms and definitions covered in this textbook
• Absolute maximum

A value ƒ(c) is an absolute maximum value of ƒ if ƒ(c) ? ƒ(x) for all x in the domain of ƒ.

• Base

See Exponential function, Logarithmic function, nth power of a.

• Cofunction identity

An identity that relates the sine, secant, or tangent to the cosine, cosecant, or cotangent, respectively

• Conjugate axis of a hyperbola

The line segment of length 2b that is perpendicular to the focal axis and has the center of the hyperbola as its midpoint

• Elimination method

A method of solving a system of linear equations

• Explanatory variable

A variable that affects a response variable.

• Exponential decay function

Decay modeled by ƒ(x) = a ? bx, a > 0 with 0 < b < 1.

• Factor

In algebra, a quantity being multiplied in a product. In statistics, a potential explanatory variable under study in an experiment, .

• Integers

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

• Magnitude of an arrow

The magnitude of PQ is the distance between P and Q

• Natural logarithm

A logarithm with base e.

• Order of magnitude (of n)

log n.

• Polynomial in x

An expression that can be written in the form an x n + an-1x n-1 + Á + a1x + a0, where n is a nonnegative integer, the coefficients are real numbers, and an ? 0. The degree of the polynomial is n, the leading coefficient is an, the leading term is anxn, and the constant term is a0. (The number 0 is the zero polynomial)

• Quotient of complex numbers

a + bi c + di = ac + bd c2 + d2 + bc - ad c2 + d2 i

• Removable discontinuity at x = a

lim x:a- ƒ(x) = limx:a+ ƒ(x) but either the common limit is not equal ƒ(a) to ƒ(a) or is not defined

• Resolving a vector

Finding the horizontal and vertical components of a vector.

• 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.

• Statistic

A number that measures a quantitative variable for a sample from a population.

• Sum of functions

(ƒ + g)(x) = ƒ(x) + g(x)

• Term of a polynomial (function)

An expression of the form anxn in a polynomial (function).

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