×
Get Full Access to Calculus - Textbook Survival Guide
Get Full Access to Calculus - Textbook Survival Guide
×

# Solutions for Chapter 4.2: Precalculus 5th Edition

## Full solutions for Precalculus | 5th Edition

ISBN: 9780321837349

Solutions for Chapter 4.2

Solutions for Chapter 4.2
4 5 0 342 Reviews
12
5
##### ISBN: 9780321837349

This textbook survival guide was created for the textbook: Precalculus, edition: 5. Precalculus was written by and is associated to the ISBN: 9780321837349. This expansive textbook survival guide covers the following chapters and their solutions. Since 10 problems in chapter 4.2 have been answered, more than 11020 students have viewed full step-by-step solutions from this chapter. Chapter 4.2 includes 10 full step-by-step solutions.

Key Calculus Terms and definitions covered in this textbook
• Annual percentage yield (APY)

The rate that would give the same return if interest were computed just once a year

• Axis of symmetry

See Line of symmetry.

• Categorical variable

In statistics, a nonnumerical variable such as gender or hair color. Numerical variables like zip codes, in which the numbers have no quantitative significance, are also considered to be categorical.

• Compounded monthly

See Compounded k times per year.

• Demand curve

p = g(x), where x represents demand and p represents price

• Dependent variable

Variable representing the range value of a function (usually y)

• Elimination method

A method of solving a system of linear equations

• equation of a parabola

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

• Fitting a line or curve to data

Finding a line or curve that comes close to passing through all the points in a scatter plot.

• Focal width of a parabola

The length of the chord through the focus and perpendicular to the axis.

• Horizontal shrink or stretch

See Shrink, stretch.

• Intercepted arc

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

• Midpoint (in Cartesian space)

For the line segment with endpoints (x 1, y1, z 1) and (x2, y2, z2), ax 1 + x 22 ,y1 + y22 ,z 1 + z 22 b

• Minor axis

The perpendicular bisector of the major axis of an ellipse with endpoints on the ellipse.

• Natural numbers

The numbers 1, 2, 3, . . . ,.

• Open interval

An interval that does not include its endpoints.

• Randomization

The principle of experimental design that makes it possible to use the laws of probability when making inferences.

• Regression model

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

• Right triangle

A triangle with a 90° angle.

• Time plot

A line graph in which time is measured on the horizontal axis.

×