 2.5.49: In Exercises 4950, use the Rational Zero Theorem to list all possib...
 2.5.50: In Exercises 4950, use the Rational Zero Theorem to list all possib...
 2.5.51: In Exercises 5152, use Descartess Rule of Signs to determine the po...
 2.5.52: In Exercises 5152, use Descartess Rule of Signs to determine the po...
 2.5.53: Use Descartess Rule of Signs to explain why 2x4 + 6x2 + 8 = 0 has n...
 2.5.54: For Exercises 5460, a. List all possible rational roots or rational...
 2.5.55: For Exercises 5460, a. List all possible rational roots or rational...
 2.5.56: For Exercises 5460, a. List all possible rational roots or rational...
 2.5.57: For Exercises 5460, a. List all possible rational roots or rational...
 2.5.58: For Exercises 5460, a. List all possible rational roots or rational...
 2.5.59: For Exercises 5460, a. List all possible rational roots or rational...
 2.5.60: For Exercises 5460, a. List all possible rational roots or rational...
 2.5.61: In Exercises 6162, fi nd an nthdegree polynomial function with rea...
 2.5.62: In Exercises 6162, fi nd an nthdegree polynomial function with rea...
 2.5.63: In Exercises 6364, fi nd all the zeros of each polynomial function ...
 2.5.64: In Exercises 6364, fi nd all the zeros of each polynomial function ...
 2.5.65: In Exercises 6568, graphs of fi fthdegree polynomial functions are...
 2.5.66: In Exercises 6568, graphs of fi fthdegree polynomial functions are...
 2.5.67: In Exercises 6568, graphs of fi fthdegree polynomial functions are...
Solutions for Chapter 2.5: Precalculus 5th Edition
Full solutions for Precalculus  5th Edition
ISBN: 9780321837349
Solutions for Chapter 2.5
Get Full SolutionsChapter 2.5 includes 19 full stepbystep solutions. This textbook survival guide was created for the textbook: Precalculus, edition: 5. Precalculus was written by and is associated to the ISBN: 9780321837349. This expansive textbook survival guide covers the following chapters and their solutions. Since 19 problems in chapter 2.5 have been answered, more than 11761 students have viewed full stepbystep solutions from this chapter.

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

Arrow
The notation PQ denoting the directed line segment with initial point P and terminal point Q.

Binomial probability
In an experiment with two possible outcomes, the probability of one outcome occurring k times in n independent trials is P1E2 = n!k!1n  k2!pk11  p) nk where p is the probability of the outcome occurring once

Center
The central point in a circle, ellipse, hyperbola, or sphere

Constant of variation
See Power function.

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 threedimensional space

Difference of complex numbers
(a + bi)  (c + di) = (a  c) + (b  d)i

Doubleangle identity
An identity involving a trigonometric function of 2u

Fundamental
Theorem of Algebra A polynomial function of degree has n complex zeros (counting multiplicity).

Negative angle
Angle generated by clockwise rotation.

Product of matrices A and B
The matrix in which each entry is obtained by multiplying the entries of a row of A by the corresponding entries of a column of B and then adding

Quotient of complex numbers
a + bi c + di = ac + bd c2 + d2 + bc  ad c2 + d2 i

Reciprocal identity
An identity that equates a trigonometric function with the reciprocal of another trigonometricfunction.

Recursively defined sequence
A sequence defined by giving the first term (or the first few terms) along with a procedure for finding the subsequent terms.

Sample standard deviation
The standard deviation computed using only a sample of the entire population.

Sample survey
A process for gathering data from a subset of a population, usually through direct questioning.

Unit circle
A circle with radius 1 centered at the origin.

Upper bound for ƒ
Any number B for which ƒ(x) ? B for all x in the domain of ƒ.

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

Velocity
A vector that specifies the motion of an object in terms of its speed and direction.