Finite Mathematics & Its Applications (12th Edition)
12th Edition
ISBN: 9780134507125
Author: Goldstein
Publisher: PEARSON
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Textbook Question
Chapter 8.2, Problem 2E
In Exercises 1–6, determine whether or not the matrix is a regular stochastic matrix.
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7.
Define the sequence {b} by
bo = 0
Ել ։
= 2
8.
bn=4bn-1-4bn-2 for n ≥ 2
(a) Give the first five terms of this sequence.
(b) Prove: For all n = N, bn = 2nn.
Let a Rsuch that a 1, and let nЄ N. We're going to derive a formula for
Σoa without needing to prove it by induction. Tip: it can be helpful to use C1+C2+...+Cn
notation instead of summation notation when working this out on scratch paper.
(a) Take a a² and manipulate it until it is in the form Σ.a.
i=0
(b) Using this, calculate the difference between a Σ0 a² and Σ0 a², simplifying away the
summation notation.
i=0
(c) Now that you know what (a – 1) Σ0 a² equals, divide both sides by a − 1 to derive the
formula for
a².
(d) (Optional, just for induction practice) Prove this formula using induction.
3.
Let A, B, and C be sets and let f: A B and g BC be functions. For
each of the following, draw arrow diagrams that illustrate the situation, and then prove the
proposition.
(a) If ƒ and g are injective, then go f is injective.
(b) If ƒ and g are surjective, then go f is surjective.
(c) If gof is injective then f is injective. Make sure your arrow diagram shows that 9 does
not need to be injective!
(d) If gof is surjective then g is surjective. Make sure your arrow diagram shows that f
does not need to be surjective!
4.
5.
6.
Let X be a set and let f: XX be a function. We say that f is an involution if
fof idx and that f is idempotent if f f = f.
(a) If f is an involution, must it be invertible? Why or why not?2
(b) If f is idempotent, must it be invertible? Why or why not?
(c) If f is idempotent and x E range(f), prove that f(x) = x.
Prove that [log3 536] 5. You proof must be verifiable by someone who does not
have access to a scientific calculator or a logarithm table (you cannot use log3 536≈ 5.7).
Define the sequence {a} by a = 2-i for i≥ 1.
(a) Give the first five terms of the sequence.
(b) Prove that the sequence is increasing.
Chapter 8 Solutions
Finite Mathematics & Its Applications (12th Edition)
Ch. 8.1 - 1. Is a stochastic matrix?
Ch. 8.1 - 2. Learning Process An elementary learning process...Ch. 8.1 - In Exercises 1-6, determine whether or not the...Ch. 8.1 - In Exercises 1-6, determine whether or not the...Ch. 8.1 - In Exercises 1-6, determine whether or not the...Ch. 8.1 - Prob. 4ECh. 8.1 - In Exercises 1-6, determine whether or not the...Ch. 8.1 - Prob. 6ECh. 8.1 - In Exercises 7–12, write a stochastic matrix...Ch. 8.1 - Prob. 8E
Ch. 8.1 - Prob. 9ECh. 8.1 - Prob. 10ECh. 8.1 - Prob. 11ECh. 8.1 - Prob. 12ECh. 8.1 - In Exercises 13–18, draw a transition diagram...Ch. 8.1 - Prob. 14ECh. 8.1 - Prob. 15ECh. 8.1 - Prob. 16ECh. 8.1 - Prob. 17ECh. 8.1 - Prob. 18ECh. 8.1 - Woman in the Labor Force Referring to Example 5,...Ch. 8.1 - Prob. 20ECh. 8.1 - Cell Phone Usag e A cell phone provider classifies...Ch. 8.1 - Health Plan Option A university faculty health...Ch. 8.1 - Population Movement The Southwestern states were...Ch. 8.1 - Prob. 24ECh. 8.1 - T-Maze Each day, mice are put into a T-maze (a...Ch. 8.1 - 26. Analysis of a Poem In 1913, Markov analyzed a...Ch. 8.1 - Taxi Zones Refer to Example 7 (taxi zones). If,...Ch. 8.1 - Fitness A group of physical fitness devotees works...Ch. 8.1 - 29. Political Views According to the Higher...Ch. 8.1 - 30. Student Residences According to the Higher...Ch. 8.1 - Prob. 31ECh. 8.1 - Prob. 32ECh. 8.1 - Prob. 33ECh. 8.1 - Prob. 34ECh. 8.1 - Ehrenfest Urn Model The Ehrenfest urn model was...Ch. 8.1 - Prob. 36ECh. 8.1 - Prob. 37ECh. 8.1 - Prob. 38ECh. 8.1 - Prob. 39ECh. 8.1 - Prob. 40ECh. 8.1 - Prob. 41ECh. 8.1 - Prob. 42ECh. 8.1 - Prob. 43ECh. 8.1 - Prob. 44ECh. 8.1 - Prob. 45ECh. 8.1 - Prob. 46ECh. 8.1 - Prob. 47ECh. 8.1 - Prob. 48ECh. 8.1 - Prob. 49ECh. 8.1 - Repeat Exercise 49 for the matrices of Exercise...Ch. 8.1 - Prob. 51ECh. 8.1 - Prob. 52ECh. 8.2 - Solutions can be found following the section...Ch. 8.2 - Solutions can be found following the section...Ch. 8.2 - Solutions can be found following the section...Ch. 8.2 - In Exercises 16, determine whether or not the...Ch. 8.2 - In Exercises 16, determine whether or not the...Ch. 8.2 - In Exercises 16, determine whether or not the...Ch. 8.2 - In Exercises 16, determine whether or not the...Ch. 8.2 - In Exercises 1–6, determine whether or not the...Ch. 8.2 - In Exercises 16, determine whether or not the...Ch. 8.2 - In Exercises 7–12, find the stable distribution...Ch. 8.2 - In Exercises 712, find the stable distribution for...Ch. 8.2 - In Exercises 712, find the stable distribution for...Ch. 8.2 - In Exercises 7–12, find the stable distribution...Ch. 8.2 - In Exercises 712, find the stable distribution for...Ch. 8.2 - In Exercises 712, find the stable distribution for...Ch. 8.2 - Prob. 13ECh. 8.2 - Voter Patterns Refer to Exercise 24 of Section...Ch. 8.2 - Prob. 15ECh. 8.2 - Computer Reliability A certain university has a...Ch. 8.2 - Brand Loyalty Suppose that 60% of people who own a...Ch. 8.2 - 18. Transportation Modes Commuters can get into...Ch. 8.2 - Weather Patterns The changes in weather from day...Ch. 8.2 - 20. Women in the Labor Force Refer to the...Ch. 8.2 - 21. Car Rentals The Day-by-Day car rental agency...Ch. 8.2 - 22. Fitness Refer to Exercise 28 of Section 8.1....Ch. 8.2 - Genetics With respect to a certain gene,...Ch. 8.2 - 24. Weather Patterns The day-to-day changes in...Ch. 8.2 - Prob. 25ECh. 8.2 - Prob. 26ECh. 8.2 - Birth Weights Refer to Exercise 33 of Section 8.1....Ch. 8.2 - Bird Migrations Figure 5 describes the migration...Ch. 8.2 - Prob. 29ECh. 8.2 - Prob. 30ECh. 8.2 - Prob. 31ECh. 8.2 - Prob. 32ECh. 8.3 - 1. When an absorbing stochastic matrix is...Ch. 8.3 - Prob. 2CYUCh. 8.3 - Is [1.400.2.10.4.9] an absorbing stochastic...Ch. 8.3 - In Exercises 14, determine whether the transition...Ch. 8.3 - In Exercises 14, determine whether the transition...Ch. 8.3 - In Exercises 1–4, determine whether the transition...Ch. 8.3 - Prob. 4ECh. 8.3 - Prob. 5ECh. 8.3 - In Exercises 58, determine whether the given...Ch. 8.3 - Prob. 7ECh. 8.3 - Prob. 8ECh. 8.3 - Prob. 9ECh. 8.3 - Prob. 10ECh. 8.3 - Prob. 11ECh. 8.3 - In Exercises 912, convert the absorbing stochastic...Ch. 8.3 - The matrices in Exercises 1318 are absorbing...Ch. 8.3 - Prob. 14ECh. 8.3 - Prob. 15ECh. 8.3 - The matrices in Exercises 1318 are absorbing...Ch. 8.3 - Prob. 17ECh. 8.3 - Prob. 18ECh. 8.3 - Prob. 19ECh. 8.3 - Gambler’s Ruin Exercises 19 and 20 refer to...Ch. 8.3 - Gambler’s Ruin Exercises 19 and 20 refer to...Ch. 8.3 - Prob. 22ECh. 8.3 - Mouse in a Maze A mouse is placed in one of the...Ch. 8.3 - Prob. 24ECh. 8.3 - 25. Class Standings Suppose that the ...Ch. 8.3 - Quality Control A manufacturer of precise...Ch. 8.3 - Prob. 27ECh. 8.3 - Job Mobility The managers in a company are...Ch. 8.3 - Prob. 29ECh. 8.3 - Prob. 30ECh. 8.3 - Collecting Quotations A soft drink manufacturer...Ch. 8.3 - Tennis Consider a game of tennis between player A...Ch. 8.3 - Prob. 33ECh. 8.3 - Repeat Exercise 33 for the matrix...Ch. 8 - 1. What is a Markov process?
Ch. 8 - Prob. 2FCCECh. 8 - Prob. 3FCCECh. 8 - Prob. 4FCCECh. 8 - Define regular stochastic matrix.Ch. 8 - 6. Define the stable matrix and the stable...Ch. 8 - Prob. 7FCCECh. 8 - Prob. 8FCCECh. 8 - Prob. 9FCCECh. 8 - Prob. 10FCCECh. 8 - Prob. 11FCCECh. 8 - In Exercises 16, determine whether or not the...Ch. 8 - Prob. 2RECh. 8 - Prob. 3RECh. 8 - Prob. 4RECh. 8 - Prob. 5RECh. 8 - In Exercises 16, determine whether or not the...Ch. 8 - Prob. 7RECh. 8 - Prob. 8RECh. 8 - Prob. 9RECh. 8 - Quality Control In a certain factory, some...Ch. 8 - Prob. 11RECh. 8 - 12. Mouse in a House Figure 1 gives the layout of...Ch. 8 - 13. Which of the following is the stable...Ch. 8 - Prob. 14RECh. 8 - Prob. 15RECh. 8 - Prob. 16RECh. 8 - Prob. 17RECh. 8 - Prob. 18RECh. 8 - Prob. 19RECh. 8 - Prob. 20RECh. 8 - Prob. 21RECh. 8 - Prob. 22RECh. 8 - Prob. 1PCh. 8 - Prob. 2PCh. 8 - Prob. 3PCh. 8 - We will now show that the product of any two ...Ch. 8 - Prob. 5PCh. 8 - We will now show that the product of any two ...Ch. 8 - Prob. 7P
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