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# Solutions for Chapter P.7: Equations

## Full solutions for Precalculus | 4th Edition

ISBN: 9780321559845

Solutions for Chapter P.7: Equations

Solutions for Chapter P.7
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##### ISBN: 9780321559845

Since 173 problems in chapter P.7: Equations have been answered, more than 66728 students have viewed full step-by-step solutions from this chapter. Chapter P.7: Equations includes 173 full step-by-step solutions. 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.

Key Calculus Terms and definitions covered in this textbook
• Absolute value of a real number

Denoted by |a|, represents the number a or the positive number -a if a < 0.

• Absolute value of a vector

See Magnitude of a vector.

• Annual percentage yield (APY)

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

• Bounded

A function is bounded if there are numbers b and B such that b ? ƒ(x) ? B for all x in the domain of f.

• Elements of a matrix

See Matrix element.

• Factoring (a polynomial)

Writing a polynomial as a product of two or more polynomial factors.

• Infinite discontinuity at x = a

limx:a + x a ƒ(x) = q6 or limx:a - ƒ(x) = q.

• Intermediate Value Theorem

If ƒ is a polynomial function and a < b , then ƒ assumes every value between ƒ(a) and ƒ(b).

• Nappe

See Right circular cone.

• Objective function

See Linear programming problem.

• Pole

See Polar coordinate system.

• Rational zeros

Zeros of a function that are rational numbers.

• Reflexive property of equality

a = a

• Regression model

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

• Spiral of Archimedes

The graph of the polar curve.

• Standard form of a complex number

a + bi, where a and b are real numbers

• Sum of an infinite series

See Convergence of a series

• Variable (in statistics)

A characteristic of individuals that is being identified or measured.

• Variation

See Power function.

• 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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