Using And Understanding Mathematics: A Quantitative Reasoning Approach Plus Mylab Math With Integrated Review And Student Activity Manual Worksheets (7th Edition)
7th Edition
ISBN: 9780135168219
Author: Jeffrey O. Bennett, William L. Briggs
Publisher: PEARSON
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Chapter 12.A, Problem 5QQ
To determine
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Keity
x२
1. (i)
Identify which of the following subsets of R2 are open and which
are not.
(a)
A = (2,4) x (1, 2),
(b)
B = (2,4) x {1,2},
(c)
C = (2,4) x R.
Provide a sketch and a brief explanation to each of your answers.
[6 Marks]
(ii)
Give an example of a bounded set in R2 which is not open.
[2 Marks]
(iii)
Give an example of an open set in R2 which is not bounded.
[2 Marks
2.
(i)
Which of the following statements are true? Construct coun-
terexamples for those that are false.
(a)
sequence.
Every bounded sequence (x(n)) nEN C RN has a convergent sub-
(b)
(c)
(d)
Every sequence (x(n)) nEN C RN has a convergent subsequence.
Every convergent sequence (x(n)) nEN C RN is bounded.
Every bounded sequence (x(n)) EN CRN converges.
nЄN
(e)
If a sequence (xn)nEN C RN has a convergent subsequence, then
(xn)nEN is convergent.
[10 Marks]
(ii)
Give an example of a sequence (x(n))nEN CR2 which is located on
the parabola x2 = x², contains infinitely many different points and converges
to the limit x = (2,4).
[5 Marks]
2.
(i) What does it mean to say that a sequence (x(n)) nEN CR2
converges to the limit x E R²?
[1 Mark]
(ii) Prove that if a set ECR2 is closed then every convergent
sequence (x(n))nen in E has its limit in E, that is
(x(n)) CE and x() x
x = E.
[5 Marks]
(iii)
which is located on the parabola x2 = = x
x4, contains a subsequence that
Give an example of an unbounded sequence (r(n)) nEN CR2
(2, 16) and such that x(i)
converges to the limit x = (2, 16) and such that x(i)
#
x() for any i j.
[4 Marks
Chapter 12 Solutions
Using And Understanding Mathematics: A Quantitative Reasoning Approach Plus Mylab Math With Integrated Review And Student Activity Manual Worksheets (7th Edition)
Ch. 12.A - Prob. 1QQCh. 12.A - Prob. 2QQCh. 12.A - Prob. 3QQCh. 12.A - Prob. 4QQCh. 12.A - Prob. 5QQCh. 12.A - Prob. 6QQCh. 12.A - Prob. 7QQCh. 12.A - Prob. 8QQCh. 12.A - 9. Study Table 12.5. Which candidate received the...Ch. 12.A - 10. What is the primary lesson of the preference...
Ch. 12.A - 1. What is majority rule? When can it definitively...Ch. 12.A - Prob. 2ECh. 12.A - What is a filibuster? What percentage of the vote...Ch. 12.A - Prob. 4ECh. 12.A - Prob. 5ECh. 12.A - Prob. 6ECh. 12.A - Prob. 7ECh. 12.A - Prob. 8ECh. 12.A - Prob. 9ECh. 12.A - Prob. 10ECh. 12.A - 11. Herman won a plurality of the vote, but Hanna...Ch. 12.A - Fred beat Fran using the point system (Borda...Ch. 12.A - 13. Candidate Reagan won the popular vote for the...Ch. 12.A - Prob. 14ECh. 12.A - Prob. 15ECh. 12.A - Prob. 16ECh. 12.A - Prob. 17ECh. 12.A - Prob. 18ECh. 12.A - Prob. 19ECh. 12.A - Presidential Elections. The following tables give...Ch. 12.A - Prob. 21ECh. 12.A - Prob. 22ECh. 12.A - Prob. 23ECh. 12.A - Presidential Elections. The following tables give...Ch. 12.A - 23. Super Majorities.
a. Of the 100 senators in...Ch. 12.A - 24. Super Majorities.
a. According to the bylaws...Ch. 12.A - Prob. 27ECh. 12.A - Prob. 28ECh. 12.A - Prob. 29ECh. 12.A - Prob. 30ECh. 12.A - Prob. 31ECh. 12.A - Prob. 32ECh. 12.A - 31—34. Interpreting Preference Schedules. Answer...Ch. 12.A - 31—34. Interpreting Preference Schedules. Answer...Ch. 12.A - 31—34. Interpreting Preference Schedules. Answer...Ch. 12.A - Prob. 36ECh. 12.A - Prob. 37ECh. 12.A - Prob. 38ECh. 12.A - Prob. 39ECh. 12.A - Prob. 40ECh. 12.A - Prob. 41ECh. 12.A - How Close Was 2016? Consider Table 12.3 which...Ch. 12.A - Prob. 43ECh. 12.A - Prob. 44ECh. 12.A - Prob. 45ECh. 12.A - Prob. 46ECh. 12.A - Condorcet Winner. If a candidate wins all...Ch. 12.A - 45. Condorcet Paradox. Consider the following...Ch. 12.A - 46. Pairwise Comparisons Question.
a. How many...Ch. 12.A - Prob. 50ECh. 12.A - Prob. 51ECh. 12.A - Prob. 52ECh. 12.A - Prob. 53ECh. 12.A - Prob. 54ECh. 12.A - Sports Polls. Most men’s and women’s major college...Ch. 12.A - Elections Around the World. Many countries have...Ch. 12.B - l. How many of the four fairness criteria (see p....Ch. 12.B - Prob. 2QQCh. 12.B - Prob. 3QQCh. 12.B - Prob. 4QQCh. 12.B -
5. Suppose that Berman is declared the winner of...Ch. 12.B - 6. Suppose that Freedman is declared the winner of...Ch. 12.B - 7. Notice that if Goldsmith dropped out, Freedman...Ch. 12.B - Prob. 8QQCh. 12.B - Which of the following is not an advantage of...Ch. 12.B - Prob. 10QQCh. 12.B - Briefly summarize each of the four fairness...Ch. 12.B - Prob. 2ECh. 12.B - What is approval voting? How is it different from...Ch. 12.B - Prob. 4ECh. 12.B - Prob. 5ECh. 12.B - Prob. 6ECh. 12.B - Prob. 7ECh. 12.B - Prob. 8ECh. 12.B - Plurality and Criterion 1. Explain in words why...Ch. 12.B - 10. Plurality and Criterion 2. Consider the...Ch. 12.B - 11. Plurality and Criterion 2. Devise a preference...Ch. 12.B - Prob. 12ECh. 12.B - Plurality and Criterion 4. Suppose the plurality...Ch. 12.B - Prob. 14ECh. 12.B - Runoff Methods and Criterion 1. Explain in words...Ch. 12.B - Prob. 16ECh. 12.B - Prob. 17ECh. 12.B - Sequential Runoff and Criterion 2. Devise a...Ch. 12.B - Prob. 19ECh. 12.B - Prob. 20ECh. 12.B - Prob. 21ECh. 12.B - Prob. 22ECh. 12.B - Point System and Criterion 1. Devise your own...Ch. 12.B - 24. Point System and Criterion 2. Suppose the...Ch. 12.B - 25. Point System and Criterion 2. Devise a...Ch. 12.B - Prob. 26ECh. 12.B - Prob. 27ECh. 12.B - Prob. 28ECh. 12.B - Prob. 29ECh. 12.B - Prob. 30ECh. 12.B - Prob. 31ECh. 12.B - Pairwise Comparisons and Criterion 4. Suppose the...Ch. 12.B - Prob. 33ECh. 12.B - Approval Voting. Suppose that Candidates A and B...Ch. 12.B - Prob. 35ECh. 12.B - Power Voting. Imagine that a small company has...Ch. 12.B - 37-41: Electoral Power. Use the table below to...Ch. 12.B - 37-41: Electoral Power. Use the table below to...Ch. 12.B - Prob. 39ECh. 12.B - Prob. 40ECh. 12.B - Prob. 41ECh. 12.B - Prob. 42ECh. 12.B - Prob. 43ECh. 12.B - Prob. 44ECh. 12.B - Prob. 45ECh. 12.B - Prob. 46ECh. 12.B - Prob. 47ECh. 12.B - Prob. 48ECh. 12.B - Prob. 49ECh. 12.B - Prob. 50ECh. 12.B - Prob. 51ECh. 12.B - 52. Swing Votes. Suppose that the following...Ch. 12.B - Prob. 53ECh. 12.B - Other Fairness Criteria. The fairness criteria...Ch. 12.B - Prob. 55ECh. 12.B - Power Voting and Coalitions. Use the Web...Ch. 12.B - General Voting Power. Find the news report about...Ch. 12.B - Prob. 58ECh. 12.C - Prob. 1QQCh. 12.C - Prob. 2QQCh. 12.C - Prob. 3QQCh. 12.C - 4. Suppose that, in 2030, the census shows that...Ch. 12.C - 5. Consider a school district with 50 schools,...Ch. 12.C - 6. Consider the school district described in...Ch. 12.C - Prob. 7QQCh. 12.C - Prob. 8QQCh. 12.C - Prob. 9QQCh. 12.C - Prob. 10QQCh. 12.C - Prob. 1ECh. 12.C - Prob. 2ECh. 12.C - Prob. 3ECh. 12.C - What is the Alabama paradox? What other paradoxes...Ch. 12.C - Prob. 5ECh. 12.C - What is the quota criterion? Why are violations of...Ch. 12.C - 7. Briefly describe how Webster’s method and the...Ch. 12.C - 8. Explain why Webster’s method and the...Ch. 12.C - is the president of a large company with 12...Ch. 12.C - 10. Charlene is the head judge in a figure skating...Ch. 12.C - Prob. 11ECh. 12.C - Prob. 12ECh. 12.C - Prob. 13ECh. 12.C - Prob. 14ECh. 12.C - Prob. 15ECh. 12.C - Prob. 16ECh. 12.C - Prob. 17ECh. 12.C - 15-18: State Representation. The following table...Ch. 12.C - 19. Standard Quotas in Business. A large company...Ch. 12.C - 20. Standard Quota in Education. Capital...Ch. 12.C - Prob. 21ECh. 12.C - Prob. 22ECh. 12.C - Prob. 23ECh. 12.C - Prob. 24ECh. 12.C - Prob. 25ECh. 12.C - Prob. 26ECh. 12.C - Prob. 27ECh. 12.C - Prob. 28ECh. 12.C - Prob. 29ECh. 12.C - Prob. 30ECh. 12.C - 29-32: Jefferson's Method. Apply Jefferson's...Ch. 12.C - Jefferson's Method. Apply Jefferson's method to...Ch. 12.C - 33. Webster’s Method. Use Webster’s method to...Ch. 12.C - 34. Webster’s Method. Use Webster’s method to...Ch. 12.C - Prob. 35ECh. 12.C - Prob. 36ECh. 12.C - Prob. 37ECh. 12.C - Prob. 38ECh. 12.C - Comparing Methods. Assume 100 delegates are to be...Ch. 12.C - Prob. 40ECh. 12.C - Prob. 41ECh. 12.C - 39-42: Comparing Methods. Assume 100 delegates are...Ch. 12.C - 43-46: Non-House Apportionments. The following...Ch. 12.C - 43-46: Non-House Apportionments. The following...Ch. 12.C - 43-46: Non-House Apportionments. The following...Ch. 12.C - Prob. 46ECh. 12.C - Prob. 47ECh. 12.C - Prob. 48ECh. 12.C - Prob. 49ECh. 12.D - Prob. 1QQCh. 12.D - Prob. 2QQCh. 12.D - 3. If we compare results in presidential elections...Ch. 12.D - 4. In 2010, Republicans in North Carolina received...Ch. 12.D - Prob. 5QQCh. 12.D - Prob. 6QQCh. 12.D - Prob. 7QQCh. 12.D - Prob. 8QQCh. 12.D - Prob. 9QQCh. 12.D - Prob. 10QQCh. 12.D - What is redistricting, and when must it be done?Ch. 12.D - 2. How has the competitiveness of elections for...Ch. 12.D - 3. What is gerrymandering? Where does this term...Ch. 12.D - 4. Briefly describe how the drawing of boundaries...Ch. 12.D - What requirements must be met in drawing district...Ch. 12.D - Briefly describe two ideas for reforming the...Ch. 12.D - In the last election in my home state, 48% of the...Ch. 12.D - Prob. 8ECh. 12.D - Polls show that half voters in our state plan to...Ch. 12.D - Prob. 10ECh. 12.D - Prob. 11ECh. 12.D - Prob. 12ECh. 12.D - Redistricting and House Elections. The 2010 census...Ch. 12.D - Prob. 14ECh. 12.D - Redistricting and House Elections. The 2010 census...Ch. 12.D - 13-17: Redistricting and House Elections. The 2010...Ch. 12.D - Redistricting and House Elections. The 2010 census...Ch. 12.D -
18-23: Average and Extreme Districts. Consider...Ch. 12.D - Prob. 19ECh. 12.D - Prob. 20ECh. 12.D - 18—23: Average and Extreme Districts. Consider the...Ch. 12.D - Average and Extreme Districts. Consider the...Ch. 12.D - Prob. 23ECh. 12.D - Prob. 24ECh. 12.D - Prob. 25ECh. 12.D - Prob. 26ECh. 12.D - Prob. 27ECh. 12.D - Prob. 28ECh. 12.D - 28—29: Drawing Districts Set III. Refer to Figure...Ch. 12.D - 30—32: Drawing Districts Set IV. Refer to Figure...Ch. 12.D - 30—32: Drawing Districts Set IV. Refer to Figure...Ch. 12.D - Prob. 32ECh. 12.D - Prob. 33ECh. 12.D - Prob. 34ECh. 12.D - Prob. 35ECh. 12.D - Prob. 36ECh. 12.D - Prob. 37ECh. 12.D - Prob. 38ECh. 12.D - Prob. 39ECh. 12.D - Prob. 40ECh. 12.D - Prob. 41ECh. 12.D - 42. Redistricting Procedures. Choose a state that...Ch. 12.D - 43. Reform Efforts. Investigate the current status...Ch. 12.D - 44. Mathematical Algorithms for Reform. Search for...Ch. 12.D - Prob. 45E
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