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# Solutions for Chapter 9.2: Arithmetic Sequences and Partial Sums

## Full solutions for Precalculus | 7th Edition

ISBN: 9780618643448

Solutions for Chapter 9.2: Arithmetic Sequences and Partial Sums

Solutions for Chapter 9.2
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##### ISBN: 9780618643448

This expansive textbook survival guide covers the following chapters and their solutions. Chapter 9.2: Arithmetic Sequences and Partial Sums includes 111 full step-by-step solutions. This textbook survival guide was created for the textbook: Precalculus, edition: 7. Since 111 problems in chapter 9.2: Arithmetic Sequences and Partial Sums have been answered, more than 18888 students have viewed full step-by-step solutions from this chapter. 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

• Bias

A flaw in the design of a sampling process that systematically causes the sample to differ from the population with respect to the statistic being measured. Undercoverage bias results when the sample systematically excludes one or more segments of the population. Voluntary response bias results when a sample consists only of those who volunteer their responses. Response bias results when the sampling design intentionally or unintentionally influences the responses

• Compound interest

Interest that becomes part of the investment

• Constant function (on an interval)

ƒ(x 1) = ƒ(x 2) x for any x1 and x2 (in the interval)

• Correlation coefficient

A measure of the strength of the linear relationship between two variables, pp. 146, 162.

• Double inequality

A statement that describes a bounded interval, such as 3 ? x < 5

• Expanded form of a series

A series written explicitly as a sum of terms (not in summation notation).

• Frequency distribution

See Frequency table.

• Index of summation

See Summation notation.

• Main diagonal

The diagonal from the top left to the bottom right of a square matrix

• Major axis

The line segment through the foci of an ellipse with endpoints on the ellipse

• One-to-one rule of logarithms

x = y if and only if logb x = logb y.

• Origin

The number zero on a number line, or the point where the x- and y-axes cross in the Cartesian coordinate system, or the point where the x-, y-, and z-axes cross in Cartesian three-dimensional space

• Polar coordinates

The numbers (r, ?) that determine a point’s location in a polar coordinate system. The number r is the directed distance and ? is the directed angle

The graph in three dimensions of a seconddegree equation in three variables.

• Semiperimeter of a triangle

One-half of the sum of the lengths of the sides of a triangle.

• Sum of an infinite series

See Convergence of a series

• Unit vector

Vector of length 1.

• Vertex of a cone

See Right circular cone.

• Window dimensions

The restrictions on x and y that specify a viewing window. See Viewing window.

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