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# Solutions for Chapter 1-3: Cumulative Test for Chapters 13

## Full solutions for Precalculus | 7th Edition

ISBN: 9780618643448

Solutions for Chapter 1-3: Cumulative Test for Chapters 13

Solutions for Chapter 1-3
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##### ISBN: 9780618643448

Chapter 1-3: Cumulative Test for Chapters 13 includes 42 full step-by-step solutions. This expansive textbook survival guide covers the following chapters and their solutions. Precalculus was written by and is associated to the ISBN: 9780618643448. This textbook survival guide was created for the textbook: Precalculus, edition: 7. Since 42 problems in chapter 1-3: Cumulative Test for Chapters 13 have been answered, more than 17599 students have viewed full step-by-step solutions from this chapter.

Key Calculus Terms and definitions covered in this textbook
• Argument of a complex number

The argument of a + bi is the direction angle of the vector {a,b}.

• Coefficient

The real number multiplied by the variable(s) in a polynomial term

• 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

• Coterminal angles

Two angles having the same initial side and the same terminal side

• Difference of functions

(ƒ - g)(x) = ƒ(x) - g(x)

• Frequency (in statistics)

The number of individuals or observations with a certain characteristic.

• Intercept

Point where a curve crosses the x-, y-, or z-axis in a graph.

• Leibniz notation

The notation dy/dx for the derivative of ƒ.

• Modified boxplot

A boxplot with the outliers removed.

• nth root of unity

A complex number v such that vn = 1

• Number line graph of a linear inequality

The graph of the solutions of a linear inequality (in x) on a number line

• Quartile

The first quartile is the median of the lower half of a set of data, the second quartile is the median, and the third quartile is the median of the upper half of the data.

• Range screen

See Viewing window.

• Residual

The difference y1 - (ax 1 + b), where (x1, y1)is a point in a scatter plot and y = ax + b is a line that fits the set of data.

• Standard position (angle)

An angle positioned on a rectangular coordinate system with its vertex at the origin and its initial side on the positive x-axis

• Statute mile

5280 feet.

• Variation

See Power function.

• Vector equation for a line in space

The line through P0(x 0, y0, z0) in the direction of the nonzero vector V = <a, b, c> has vector equation r = r0 + tv , where r = <x,y,z>.

• Vertices of a hyperbola

The points where a hyperbola intersects the line containing its foci.

• 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.

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