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# Solutions for Chapter A.2: Exponents and Radicals

## Full solutions for Precalculus | 7th Edition

ISBN: 9780618643448

Solutions for Chapter A.2: Exponents and Radicals

Solutions for Chapter A.2
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##### ISBN: 9780618643448

Precalculus was written by and is associated to the ISBN: 9780618643448. Since 112 problems in chapter A.2: Exponents and Radicals have been answered, more than 34949 students have viewed full step-by-step solutions from this chapter. This expansive textbook survival guide covers the following chapters and their solutions. This textbook survival guide was created for the textbook: Precalculus, edition: 7. Chapter A.2: Exponents and Radicals includes 112 full step-by-step solutions.

Key Calculus Terms and definitions covered in this textbook
• Additive identity for the complex numbers

0 + 0i is the complex number zero

• Angle

Union of two rays with a common endpoint (the vertex). The beginning ray (the initial side) can be rotated about its endpoint to obtain the final position (the terminal side)

• Argument of a complex number

The argument of a + bi is the direction angle of the vector {a,b}.

• Compounded continuously

Interest compounded using the formula A = Pert

• Degree of a polynomial (function)

The largest exponent on the variable in any of the terms of the polynomial (function)

• Direction of an arrow

The angle the arrow makes with the positive x-axis

• Exponential decay function

Decay modeled by ƒ(x) = a ? bx, a > 0 with 0 < b < 1.

• Gaussian curve

See Normal curve.

• Graphical model

A visible representation of a numerical or algebraic model.

• nth power of a

The number with n factors of a , where n is the exponent and a is the base.

• Ordered pair

A pair of real numbers (x, y), p. 12.

• Origin

The number zero on a number line, or the point where the x- and y-axes cross in the Cartesian coordinate system, or the point where the x-, y-, and z-axes cross in Cartesian three-dimensional space

• Positive numbers

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

• Proportional

See Power function

• Rectangular coordinate system

See Cartesian coordinate system.

• Secant line of ƒ

A line joining two points of the graph of ƒ.

• Variance

The square of the standard deviation.

• Vertex of an angle

See Angle.

• Work

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

• Yscl

The scale of the tick marks on the y-axis in a viewing window.

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