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# Solutions for Chapter 7.2: Precalculus 5th Edition ## Full solutions for Precalculus | 5th Edition

ISBN: 9780321837349 Solutions for Chapter 7.2

Solutions for Chapter 7.2
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##### ISBN: 9780321837349

This textbook survival guide was created for the textbook: Precalculus, edition: 5. Since 4 problems in chapter 7.2 have been answered, more than 11929 students have viewed full step-by-step solutions from this chapter. Precalculus was written by and is associated to the ISBN: 9780321837349. This expansive textbook survival guide covers the following chapters and their solutions. Chapter 7.2 includes 4 full step-by-step solutions.

Key Calculus Terms and definitions covered in this textbook
• Angle between vectors

The angle formed by two nonzero vectors sharing a common initial point

• Compounded continuously

Interest compounded using the formula A = Pert

• Cosine

The function y = cos x

• Exponential regression

A procedure for fitting an exponential function to a set of data.

• First-degree equation in x , y, and z

An equation that can be written in the form.

• Parabola

The graph of a quadratic function, or the set of points in a plane that are equidistant from a fixed point (the focus) and a fixed line (the directrix).

• Positive association

A relationship between two variables in which higher values of one variable are generally associated with higher values of the other variable, p. 717.

• Probability of an event in a finite sample space of equally likely outcomes

The number of outcomes in the event divided by the number of outcomes in the sample space.

• Product rule of logarithms

ogb 1RS2 = logb R + logb S, R > 0, S > 0,

Any one of the four parts into which a plane is divided by the perpendicular coordinate axes.

• Rational zeros theorem

A procedure for finding the possible rational zeros of a polynomial.

• Reflection across the y-axis

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

• Response variable

A variable that is affected by an explanatory variable.

• Scatter plot

A plot of all the ordered pairs of a two-variable data set on a coordinate plane.

• Secant line of ƒ

A line joining two points of the graph of ƒ.

• Symmetric difference quotient of ƒ at a

ƒ(x + h) - ƒ(x - h) 2h

• Translation

See Horizontal translation, Vertical translation.

• Upper bound test for real zeros

A test for finding an upper bound for the real zeros of a polynomial.

• Variable

A letter that represents an unspecified number.

• Vertical translation

A shift of a graph up or down.

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