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# Solutions for Chapter 2: Polynomial and Rational Functions

## Full solutions for Precalculus | 7th Edition

ISBN: 9780618643448

Solutions for Chapter 2: Polynomial and Rational Functions

Solutions for Chapter 2
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##### ISBN: 9780618643448

This textbook survival guide was created for the textbook: Precalculus, edition: 7. Since 153 problems in chapter 2: Polynomial and Rational Functions have been answered, more than 17530 students have viewed full step-by-step solutions from this chapter. This expansive textbook survival guide covers the following chapters and their solutions. Chapter 2: Polynomial and Rational Functions includes 153 full step-by-step solutions. Precalculus was written by and is associated to the ISBN: 9780618643448.

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

• Annuity

A sequence of equal periodic payments.

• Complex number

An expression a + bi, where a (the real part) and b (the imaginary part) are real numbers

• Conversion factor

A ratio equal to 1, used for unit conversion

• Extraneous solution

Any solution of the resulting equation that is not a solution of the original equation.

• Half-angle identity

Identity involving a trigonometric function of u/2.

• Infinite sequence

A function whose domain is the set of all natural numbers.

See Polynomial function in x

• Left-hand limit of f at x a

The limit of ƒ as x approaches a from the left.

• LRAM

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

• n-set

A set of n objects.

• Parametric equations for a line in space

The line through P0(x 0, y0, z 0) in the direction of the nonzero vector v = <a, b, c> has parametric equations x = x 0 + at, y = y 0 + bt, z = z0 + ct.

• 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.

• Polar axis

See Polar coordinate system.

• Real zeros

Zeros of a function that are real numbers.

• Reciprocal of a real number

See Multiplicative inverse of a real number.

• Variance

The square of the standard deviation.

• Vertex form for a quadratic function

ƒ(x) = a(x - h)2 + k

• Ymin

The y-value of the bottom of the viewing window.

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