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# Solutions for Chapter 7.1: TRIGONOMETRIC FUNCTIONS OF REAL NUMBERS

## Full solutions for Precalculus: With Unit Circle Trigonometry (with Interactive Video Skillbuilder CD-ROM) (Available 2010 Titles Enhanced Web Assign) | 4th Edition

ISBN: 9780534402303

Solutions for Chapter 7.1: TRIGONOMETRIC FUNCTIONS OF REAL NUMBERS

Solutions for Chapter 7.1
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##### ISBN: 9780534402303

This expansive textbook survival guide covers the following chapters and their solutions. Precalculus: With Unit Circle Trigonometry (with Interactive Video Skillbuilder CD-ROM) (Available 2010 Titles Enhanced Web Assign) was written by and is associated to the ISBN: 9780534402303. This textbook survival guide was created for the textbook: Precalculus: With Unit Circle Trigonometry (with Interactive Video Skillbuilder CD-ROM) (Available 2010 Titles Enhanced Web Assign), edition: 4. Since 69 problems in chapter 7.1: TRIGONOMETRIC FUNCTIONS OF REAL NUMBERS have been answered, more than 25426 students have viewed full step-by-step solutions from this chapter. Chapter 7.1: TRIGONOMETRIC FUNCTIONS OF REAL NUMBERS includes 69 full step-by-step solutions.

Key Calculus Terms and definitions covered in this textbook
• Anchor

See Mathematical induction.

• Blind experiment

An experiment in which subjects do not know if they have been given an active treatment or a placebo

• Definite integral

The definite integral of the function ƒ over [a,b] is Lbaƒ(x) dx = limn: q ani=1 ƒ(xi) ¢x provided the limit of the Riemann sums exists

• Determinant

A number that is associated with a square matrix

• Discriminant

For the equation ax 2 + bx + c, the expression b2 - 4ac; for the equation Ax2 + Bxy + Cy2 + Dx + Ey + F = 0, the expression B2 - 4AC

• Elements of a matrix

See Matrix element.

• Equation

A statement of equality between two expressions.

• Focus, foci

See Ellipse, Hyperbola, Parabola.

• Identity function

The function ƒ(x) = x.

• Independent variable

Variable representing the domain value of a function (usually x).

• Limit

limx:aƒ1x2 = L means that ƒ(x) gets arbitrarily close to L as x gets arbitrarily close (but not equal) to a

• Linear equation in x

An equation that can be written in the form ax + b = 0, where a and b are real numbers and a Z 0

• Logarithmic re-expression of data

Transformation of a data set involving the natural logarithm: exponential regression, natural logarithmic regression, power regression

• LRAM

A Riemann sum approximation of the area under a curve ƒ(x) from x = a to x = b using x1 as the left-hand endpoint of each subinterval

• Open interval

An interval that does not include its endpoints.

• Opens upward or downward

A parabola y = ax 2 + bx + c opens upward if a > 0 and opens downward if a < 0.

• Ordered set

A set is ordered if it is possible to compare any two elements and say that one element is “less than” or “greater than” the other.

• Positive numbers

Real numbers shown to the right of the origin on a number line.

• Slope

Ratio change in y/change in x

• Work

The product of a force applied to an object over a given distance W = ƒFƒ ƒAB!ƒ.

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