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# Solutions for Chapter P.9: Precalculus 5th Edition

## Full solutions for Precalculus | 5th Edition

ISBN: 9780321837349

Solutions for Chapter P.9

Solutions for Chapter P.9
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##### ISBN: 9780321837349

This textbook survival guide was created for the textbook: Precalculus, edition: 5. This expansive textbook survival guide covers the following chapters and their solutions. Chapter P.9 includes 19 full step-by-step solutions. Precalculus was written by and is associated to the ISBN: 9780321837349. Since 19 problems in chapter P.9 have been answered, more than 6272 students have viewed full step-by-step solutions from this chapter.

Key Calculus Terms and definitions covered in this textbook
• Annual percentage rate (APR)

The annual interest rate

• Average rate of change of ƒ over [a, b]

The number ƒ(b) - ƒ(a) b - a, provided a ? b.

• Chord of a conic

A line segment with endpoints on the conic

• Conversion factor

A ratio equal to 1, used for unit conversion

• equation of a parabola

(x - h)2 = 4p(y - k) or (y - k)2 = 4p(x - h)

• Half-plane

The graph of the linear inequality y ? ax + b, y > ax + b y ? ax + b, or y < ax + b.

• Hyperboloid of revolution

A surface generated by rotating a hyperbola about its transverse axis, p. 607.

• Imaginary part of a complex number

See Complex number.

• Length of a vector

See Magnitude of a vector.

• Logistic regression

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

• Magnitude of an arrow

The magnitude of PQ is the distance between P and Q

• Modified boxplot

A boxplot with the outliers removed.

• Modulus

See Absolute value of a complex number.

• Multiplicative inverse of a matrix

See Inverse of a matrix

• Opens upward or downward

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

• Polar distance formula

The distance between the points with polar coordinates (r1, ?1 ) and (r2, ?2 ) = 2r 12 + r 22 - 2r1r2 cos 1?1 - ?22

• Reflection across the x-axis

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

• Sum of functions

(ƒ + g)(x) = ƒ(x) + g(x)

• Supply curve

p = ƒ(x), where x represents production and p represents price

• Transitive property

If a = b and b = c , then a = c. Similar properties hold for the inequality symbols <, >, ?, ?.

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