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# Solutions for Chapter 3.2: Precalculus 5th Edition

## Full solutions for Precalculus | 5th Edition

ISBN: 9780321837349

Solutions for Chapter 3.2

Solutions for Chapter 3.2
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##### ISBN: 9780321837349

This textbook survival guide was created for the textbook: Precalculus, edition: 5. Since 37 problems in chapter 3.2 have been answered, more than 10498 students have viewed full step-by-step solutions from this chapter. This expansive textbook survival guide covers the following chapters and their solutions. Precalculus was written by and is associated to the ISBN: 9780321837349. Chapter 3.2 includes 37 full step-by-step solutions.

Key Calculus Terms and definitions covered in this textbook

If u < v , then u + w < v + w

• Bounded interval

An interval that has finite length (does not extend to ? or -?)

• Census

An observational study that gathers data from an entire population

• Center

The central point in a circle, ellipse, hyperbola, or sphere

• Constant of variation

See Power function.

• Direction vector for a line

A vector in the direction of a line in three-dimensional space

• Graph of a polar equation

The set of all points in the polar coordinate system corresponding to the ordered pairs (r,?) that are solutions of the polar equation.

• Intercepted arc

Arc of a circle between the initial side and terminal side of a central angle.

• Jump discontinuity at x a

limx:a - ƒ1x2 and limx:a + ƒ1x2 exist but are not equal

• Nonsingular matrix

A square matrix with nonzero determinant

• Ordered pair

A pair of real numbers (x, y), p. 12.

A function that can be written in the form ƒ(x) = ax 2 + bx + c, where a, b, and c are real numbers, and a ? 0.

The distance from a point on a circle (or a sphere) to the center of the circle (or the sphere).

• Real zeros

Zeros of a function that are real numbers.

• Regression model

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

• Remainder theorem

If a polynomial f(x) is divided by x - c , the remainder is ƒ(c)

• Sine

The function y = sin x.

• System

A set of equations or inequalities.

• Weighted mean

A mean calculated in such a way that some elements of the data set have higher weights (that is, are counted more strongly in determining the mean) than others.

• yz-plane

The points (0, y, z) in Cartesian space.

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