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# Solutions for Chapter 1.7: Precalculus 5th Edition

## Full solutions for Precalculus | 5th Edition

ISBN: 9780321837349

Solutions for Chapter 1.7

Solutions for Chapter 1.7
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##### ISBN: 9780321837349

This textbook survival guide was created for the textbook: Precalculus, edition: 5. Since 15 problems in chapter 1.7 have been answered, more than 10404 students have viewed full step-by-step solutions from this chapter. This expansive textbook survival guide covers the following chapters and their solutions. Precalculus was written by and is associated to the ISBN: 9780321837349. Chapter 1.7 includes 15 full step-by-step solutions.

Key Calculus Terms and definitions covered in this textbook
• Characteristic polynomial of a square matrix A

det(xIn - A), where A is an n x n matrix

• Complex fraction

See Compound fraction.

• Continuous at x = a

lim x:a x a ƒ(x) = ƒ(a)

• Convergence of a sequence

A sequence {an} converges to a if limn: q an = a

• Coordinate plane

See Cartesian coordinate system.

• Cosine

The function y = cos x

• Deductive reasoning

The process of utilizing general information to prove a specific hypothesis

• Equilibrium price

See Equilibrium point.

• Expanded form

The right side of u(v + w) = uv + uw.

• Five-number summary

The minimum, first quartile, median, third quartile, and maximum of a data set.

• Focal width of a parabola

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

• Imaginary part of a complex number

See Complex number.

• Logistic regression

A procedure for fitting a logistic curve to a set of data

• Lower bound of f

Any number b for which b < ƒ(x) for all x in the domain of ƒ

• Main diagonal

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

• Negative angle

Angle generated by clockwise rotation.

• Random numbers

Numbers that can be used by researchers to simulate randomness in scientific studies (they are usually obtained from lengthy tables of decimal digits that have been generated by verifiably random natural phenomena).

• Scientific notation

A positive number written as c x 10m, where 1 ? c < 10 and m is an integer.

• Sum of an infinite geometric series

Sn = a 1 - r , |r| 6 1

• Weights

See Weighted mean.

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