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# Solutions for Chapter 1: Functions and Their Graphs

## Full solutions for Precalculus | 7th Edition

ISBN: 9780618643448

Solutions for Chapter 1: Functions and Their Graphs

Solutions for Chapter 1
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##### ISBN: 9780618643448

This textbook survival guide was created for the textbook: Precalculus, edition: 7. This expansive textbook survival guide covers the following chapters and their solutions. Chapter 1: Functions and Their Graphs includes 165 full step-by-step solutions. Since 165 problems in chapter 1: Functions and Their Graphs have been answered, more than 20518 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
• Bounded above

A function is bounded above if there is a number B such that ƒ(x) ? B for all x in the domain of ƒ.

• Common difference

See Arithmetic sequence.

• Compounded continuously

Interest compounded using the formula A = Pert

• Coordinate(s) of a point

The number associated with a point on a number line, or the ordered pair associated with a point in the Cartesian coordinate plane, or the ordered triple associated with a point in the Cartesian three-dimensional space

• Cube root

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

• Direct variation

See Power function.

• Equilibrium point

A point where the supply curve and demand curve intersect. The corresponding price is the equilibrium price.

• Hypotenuse

Side opposite the right angle in a right triangle.

• Inductive step

See Mathematical induction.

• Infinite discontinuity at x = a

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

• Polar coordinate system

A coordinate system whose ordered pair is based on the directed distance from a central point (the pole) and the angle measured from a ray from the pole (the polar axis)

• Present value of an annuity T

he net amount of your money put into an annuity.

• Product of a scalar and a vector

The product of scalar k and vector u = 8u1, u29 1or u = 8u1, u2, u392 is k.u = 8ku1, ku291or k # u = 8ku1, ku2, ku392,

• Quotient rule of logarithms

logb a R S b = logb R - logb S, R > 0, S > 0

• Real number line

A horizontal line that represents the set of real numbers.

• Reflection across the y-axis

x, y and (-x,y) are reflections of each other across the y-axis.

• Right-hand limit of ƒ at x a

The limit of ƒ as x approaches a from the right.

• Sum identity

An identity involving a trigonometric function of u + v

• Terminal point

See Arrow.

• Vertical line test

A test for determining whether a graph is a function.

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