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# Solutions for Chapter 2.1: Complex Numbers

## Full solutions for Precalculus | 4th Edition

ISBN: 9780321559845

Solutions for Chapter 2.1: Complex Numbers

Solutions for Chapter 2.1
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##### ISBN: 9780321559845

Since 86 problems in chapter 2.1: Complex Numbers have been answered, more than 67013 students have viewed full step-by-step solutions from this chapter. This textbook survival guide was created for the textbook: Precalculus, edition: 4. Precalculus was written by and is associated to the ISBN: 9780321559845. This expansive textbook survival guide covers the following chapters and their solutions. Chapter 2.1: Complex Numbers includes 86 full step-by-step solutions.

Key Calculus Terms and definitions covered in this textbook
• Arcsecant function

See Inverse secant function.

• Back-to-back stemplot

A stemplot with leaves on either side used to compare two distributions.

• 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

• Cardioid

A limaçon whose polar equation is r = a ± a sin ?, or r = a ± a cos ?, where a > 0.

• Constant of variation

See Power function.

• Cube root

nth root, where n = 3 (see Principal nth root),

• Ellipsoid of revolution

A surface generated by rotating an ellipse about its major axis

• Equally likely outcomes

Outcomes of an experiment that have the same probability of occurring.

• Finite sequence

A function whose domain is the first n positive integers for some fixed integer n.

• Inequality

A statement that compares two quantities using an inequality symbol

• Interval notation

Notation used to specify intervals, pp. 4, 5.

• Inverse function

The inverse relation of a one-to-one function.

• Negative association

A relationship between two variables in which higher values of one variable are generally associated with lower values of the other variable.

• Observational study

A process for gathering data from a subset of a population through current or past observations. This differs from an experiment in that no treatment is imposed.

• Probability distribution

The collection of probabilities of outcomes in a sample space assigned by a probability function.

• Sinusoidal regression

A procedure for fitting a curve y = a sin (bx + c) + d to a set of data

• Standard form of a polynomial function

ƒ(x) = an x n + an-1x n-1 + Á + a1x + a0

• Terminal point

See Arrow.

• Terminal side of an angle

See Angle.

• Upper bound for real zeros

A number d is an upper bound for the set of real zeros of ƒ if ƒ(x) ? 0 whenever x > d.

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