Mathematics All Around (6th Edition)
6th Edition
ISBN: 9780134434681
Author: Tom Pirnot
Publisher: PEARSON
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Textbook Question
Chapter 2.5, Problem 23E
In Example 3, we showed you how to match the natural numbers with positive rational numbers in a one-to-one correspondence. Use that matching to answer the following questions.
What rational number corresponds to the natural number 12?
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(3) (4 points) Given three vectors a, b, and c, suppose:
|bx c = 2
|a|=√√8
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Calculate the volume a (bxc) of the parallelepiped spanned by the three vectors.
Calculate these limits. If the limit is ∞ or -∞, write infinity or-infinity. If the limit does not exist, write DNE:
Hint: Remember the first thing you check when you are looking at a limit of a quotient is the limit value of the denominator.
1. If the denominator does not go to 0, you should be able to right down the answer immediately.
2. If the denominator goes to 0, but the numerator does not, you will have to check the sign (±) of the quotient, from both sides if the limit is not one-sided.
3. If both the numerator and the denominator go to 0, you have to do the algebraic trick of rationalizing.
So, group your limits into these three forms and work with them one group at a time.
(a) lim
t-pi/2
sint-√ sin 2t+14cos ² t
7
2
2
2cos
t
(b) lim
sint + sin 2t+14cos
=
∞
t-pi/2
2
2cos t
(c) lim
cost-√sin 2t+14cos² t
=
t-pi/2
2cos t
(d) lim
t→pi/2
cost+√ sin t + 14cos
2cos ² t
=
∞
(e) lim
sint-v sin
2
t + 14cos
=
0
t-pi/2
(f) lim
t-pi/2
sin t +√ sin
2sin 2 t
2
t + 14cos
t
2sin t
cost-
(g)…
Think of this sheet of paper as the plane containing the vectors a = (1,1,0) and b = (2,0,0). Sketch the parallelogram P spanned by a and b. Which diagonal of P represents the vector a--b geometrically?
Chapter 2 Solutions
Mathematics All Around (6th Edition)
Ch. 2.1 - In Exercises 1-12, use set notation to list all...Ch. 2.1 - Prob. 2ECh. 2.1 - Prob. 3ECh. 2.1 - Prob. 4ECh. 2.1 - Prob. 5ECh. 2.1 - Prob. 6ECh. 2.1 - Prob. 7ECh. 2.1 - Prob. 8ECh. 2.1 - Prob. 9ECh. 2.1 - Prob. 10E
Ch. 2.1 - Prob. 11ECh. 2.1 - Prob. 12ECh. 2.1 - In Exercises 13-22, use an alternative method to...Ch. 2.1 - In Exercises 13-22, use an alternative method to...Ch. 2.1 - Prob. 15ECh. 2.1 - Prob. 16ECh. 2.1 - In Exercises 13-22, use an alternative method to...Ch. 2.1 - In Exercises 13-22, use an alternative method to...Ch. 2.1 - In Exercises 13-22, use an alternative method to...Ch. 2.1 - In Exercises 13-22, use an alternative method to...Ch. 2.1 - In Exercises 13-22, use an alternative method to...Ch. 2.1 - Prob. 22ECh. 2.1 - Prob. 23ECh. 2.1 - Prob. 24ECh. 2.1 - Prob. 25ECh. 2.1 - Prob. 26ECh. 2.1 - Prob. 27ECh. 2.1 - Prob. 28ECh. 2.1 - Prob. 29ECh. 2.1 - Prob. 30ECh. 2.1 - In Exercises 31-42, replace each # with either or...Ch. 2.1 - In Exercises 31-42, replace each # with either or...Ch. 2.1 - In Exercises 31-42, replace each # with either or...Ch. 2.1 - In Exercises 31-42, replace each # with either or...Ch. 2.1 - Prob. 35ECh. 2.1 - In Exercises 31-42, replace each # with either or...Ch. 2.1 - In Exercises 31-42, replace each # with either or...Ch. 2.1 - In Exercises 31-42, replace each # with either or...Ch. 2.1 - In Exercises 31-42, replace each # with either or...Ch. 2.1 - In Exercises 31-42, replace each # with either or...Ch. 2.1 - In Exercises 31-42, replace each # with either or...Ch. 2.1 - In Exercises 31-42, replace each # with either or...Ch. 2.1 - Find nA for each of the following sets A. 1, 3, 5,...Ch. 2.1 - Find nA for each of the following sets A. 3, 4, 5,...Ch. 2.1 - Find nA for each of the following sets A. x: x is...Ch. 2.1 - Find nA for each of the following sets A. x: x is...Ch. 2.1 - Prob. 47ECh. 2.1 - Find nA for each of the following sets A. x: x is...Ch. 2.1 - In Exercises 49-52, draw a bag diagram similar to...Ch. 2.1 - In Exercises 49-52, draw a bag diagram similar to...Ch. 2.1 - Prob. 51ECh. 2.1 - In Exercises 49-52, draw a bag diagram similar to...Ch. 2.1 - Prob. 53ECh. 2.1 - Prob. 54ECh. 2.1 - Prob. 55ECh. 2.1 - Describe each of the following sets as either...Ch. 2.1 - Prob. 57ECh. 2.1 - Prob. 58ECh. 2.1 - In Exercises 57-64, find an element of set A that...Ch. 2.1 - In Exercises 57-64, find an element of set A that...Ch. 2.1 - Prob. 61ECh. 2.1 - Prob. 62ECh. 2.1 - Prob. 63ECh. 2.1 - Prob. 64ECh. 2.1 - Applying What Youve Learned In Exercises 65-68,...Ch. 2.1 - Prob. 66ECh. 2.1 - Prob. 67ECh. 2.1 - Prob. 68ECh. 2.1 - Prob. 69ECh. 2.1 - Prob. 70ECh. 2.1 - Prob. 71ECh. 2.1 - Prob. 72ECh. 2.1 - Prob. 73ECh. 2.1 - Prob. 74ECh. 2.1 - Prob. 75ECh. 2.1 - Prob. 76ECh. 2.1 - Communicating Mathematics The Analogies Principle...Ch. 2.1 - Prob. 78ECh. 2.1 - Communicating Mathematics Give a careful...Ch. 2.1 - Communicating Mathematics Often good notation...Ch. 2.1 - Challenge Yourself Sets of well-known people. Let...Ch. 2.1 - Prob. 84ECh. 2.1 - We will define a paradox as a statement that...Ch. 2.1 - We will define a paradox as a statement that...Ch. 2.1 - Prob. 87ECh. 2.2 - In Exercises 1-8, decide whether each pair of sets...Ch. 2.2 - In Exercises 1-8, decide whether each pair of sets...Ch. 2.2 - Prob. 3ECh. 2.2 - Prob. 4ECh. 2.2 - Prob. 5ECh. 2.2 - Prob. 6ECh. 2.2 - In Exercises 1-8, decide whether each pair of sets...Ch. 2.2 - Prob. 8ECh. 2.2 - In Exercises 9-14, decide whether each statement...Ch. 2.2 - In Exercises 9-14, decide whether each statement...Ch. 2.2 - In Exercises 9-14, decide whether each statement...Ch. 2.2 - Prob. 12ECh. 2.2 - In Exercises 9-14, decide whether each statement...Ch. 2.2 - In Exercises 9-14, decide whether each statement...Ch. 2.2 - In Exercises 15-24, decide whether each pair of...Ch. 2.2 - In Exercises 15-24, decide whether each pair of...Ch. 2.2 - In Exercises 9-14, decide whether each statement...Ch. 2.2 - Prob. 18ECh. 2.2 - Prob. 19ECh. 2.2 - In Exercises 15-24, decide whether each pair of...Ch. 2.2 - In Exercises 15-24, decide whether each pair of...Ch. 2.2 - Prob. 22ECh. 2.2 - Prob. 23ECh. 2.2 - Prob. 24ECh. 2.2 - Prob. 25ECh. 2.2 - Prob. 26ECh. 2.2 - Prob. 27ECh. 2.2 - Prob. 28ECh. 2.2 - If set A has five elements, how many subsets does...Ch. 2.2 - If A has seven elements, how many subsets does A...Ch. 2.2 - Use the following table to answer Exercises 31-34....Ch. 2.2 - Use the following table to answer Exercises 31-34....Ch. 2.2 - Use the following table to answer Exercises 31-34....Ch. 2.2 - Prob. 34ECh. 2.2 - Prob. 35ECh. 2.2 - Prob. 36ECh. 2.2 - Prob. 37ECh. 2.2 - Prob. 38ECh. 2.2 - Dominos Pizza advertises that you can order your...Ch. 2.2 - If Dominos Pizza wants to advertise that there are...Ch. 2.2 - Burger King advertises that Have it your way. If...Ch. 2.2 - Burger King wishes to outdo Dominos Pizza in...Ch. 2.2 - The owners of Phoenix Flames football team won...Ch. 2.2 - Five internet companies are so that they can...Ch. 2.2 - Prob. 45ECh. 2.2 - Prob. 46ECh. 2.2 - Prob. 47ECh. 2.2 - Prob. 48ECh. 2.2 - Prob. 49ECh. 2.2 - Prob. 50ECh. 2.2 - Your friend Noah does not understand why his...Ch. 2.2 - Your friend Noah does not understand why his...Ch. 2.2 - Prob. 53ECh. 2.2 - Prob. 54ECh. 2.2 - When mathematicians find a solution to a problem,...Ch. 2.2 - Prob. 56ECh. 2.2 - Prob. 57ECh. 2.2 - Prob. 58ECh. 2.2 - In Exercises 59 -62, recall that in Section 1.1 we...Ch. 2.2 - In Exercises 59 -62, recall that in Section 1.1 we...Ch. 2.2 - Prob. 61ECh. 2.2 - Prob. 62ECh. 2.2 - Prob. 63ECh. 2.2 - Notice that the arrangement of numbers in each row...Ch. 2.2 - Assume the law firm of Dewey, Cheatum, and Howe...Ch. 2.2 - Prob. 66ECh. 2.2 - We mentioned that the subset notation, , and the...Ch. 2.2 - We mentioned that the subset notation, , and the...Ch. 2.2 - Prob. 69ECh. 2.2 - Discuss why it would be impossible with finite...Ch. 2.3 - Prob. 1ECh. 2.3 - Prob. 2ECh. 2.3 - Prob. 3ECh. 2.3 - Prob. 4ECh. 2.3 - Prob. 5ECh. 2.3 - Prob. 6ECh. 2.3 - Prob. 7ECh. 2.3 - Prob. 8ECh. 2.3 - Prob. 9ECh. 2.3 - Prob. 10ECh. 2.3 - In Exercises 1-12, let U=1,2,3,,10, A=1,3,5,7,9,...Ch. 2.3 - Prob. 12ECh. 2.3 - Prob. 13ECh. 2.3 - Prob. 14ECh. 2.3 - Prob. 15ECh. 2.3 - Prob. 16ECh. 2.3 - Prob. 17ECh. 2.3 - Prob. 18ECh. 2.3 - Consider the following large and small colored...Ch. 2.3 - Consider the following large and small colored...Ch. 2.3 - Consider the following large and small colored...Ch. 2.3 - Consider the following large and small colored...Ch. 2.3 - Prob. 23ECh. 2.3 - Prob. 24ECh. 2.3 - Prob. 25ECh. 2.3 - Prob. 26ECh. 2.3 - Prob. 27ECh. 2.3 - Prob. 28ECh. 2.3 - Prob. 29ECh. 2.3 - Prob. 30ECh. 2.3 - Prob. 31ECh. 2.3 - Prob. 32ECh. 2.3 - Prob. 33ECh. 2.3 - Prob. 34ECh. 2.3 - Prob. 35ECh. 2.3 - Prob. 36ECh. 2.3 - Prob. 37ECh. 2.3 - Prob. 38ECh. 2.3 - Prob. 39ECh. 2.3 - Prob. 40ECh. 2.3 - We have indicated the number of elements in each...Ch. 2.3 - Prob. 42ECh. 2.3 - We have indicated the number of elements in each...Ch. 2.3 - Prob. 44ECh. 2.3 - We have indicated the number of elements in each...Ch. 2.3 - We have indicated the number of elements in each...Ch. 2.3 - Prob. 47ECh. 2.3 - We have indicated the number of elements in each...Ch. 2.3 - Appling What youve learned In the following table,...Ch. 2.3 - Appling What youve learned In the following table,...Ch. 2.3 - Applying What Youve Learned In the following...Ch. 2.3 - Applying What Youve Learned In the following...Ch. 2.3 - Applying What Youve Learned In the following...Ch. 2.3 - Prob. 54ECh. 2.3 - Applying What Youve Learned In the following...Ch. 2.3 - Applying What Youve Learned In the following...Ch. 2.3 - Prob. 57ECh. 2.3 - Prob. 58ECh. 2.3 - Prob. 59ECh. 2.3 - Prob. 60ECh. 2.3 - Prob. 61ECh. 2.3 - Prob. 62ECh. 2.3 - Prob. 63ECh. 2.3 - Prob. 64ECh. 2.3 - As of January 2016, Box Office Mojo reported that,...Ch. 2.3 - As of January 2016, Box Office Mojo reported that,...Ch. 2.3 - As of January 2016, Box Office Mojo reported that,...Ch. 2.3 - As of January 2016, Box Office Mojo reported that,...Ch. 2.3 - As of January 2016, Box Office Mojo reported that,...Ch. 2.3 - As of January 2016, Box Office Mojo reported that,...Ch. 2.3 - Prob. 71ECh. 2.3 - Prob. 72ECh. 2.3 - Communicating Mathematics Students often mistake...Ch. 2.3 - Communicating Mathematics Give some examples in...Ch. 2.3 - Prob. 77ECh. 2.3 - Prob. 78ECh. 2.3 - Challenge Yourself In Exercise 77 80, decide...Ch. 2.3 - Challenge Yourself In Exercise 77 80, decide...Ch. 2.3 - In Exercise 81 84, assume AB. Express each set in...Ch. 2.3 - Prob. 82ECh. 2.3 - In Exercise 81 84, assume AB. Express each set in...Ch. 2.3 - In Exercise 81 84, Assume AB. Express each set in...Ch. 2.3 - Prob. 85ECh. 2.3 - Example 8 shows that in set theory, intersection...Ch. 2.4 - Sharpening Your Skills In Exercises 14, determine...Ch. 2.4 - Sharpening Your Skills In Exercises 14, determine...Ch. 2.4 - Sharpening Your Skills In Exercises 14, determine...Ch. 2.4 - Sharpening Your Skills In Exercises 14, determine...Ch. 2.4 - Sharpening Your Skills In Exercises 5-10, describe...Ch. 2.4 - Prob. 6ECh. 2.4 - Sharpening Your Skills In Exercises 5-10, describe...Ch. 2.4 - Sharpening Your Skills In Exercises 5-10, describe...Ch. 2.4 - Prob. 9ECh. 2.4 - Prob. 10ECh. 2.4 - Prob. 11ECh. 2.4 - Sharpening Your Skills The numbers in the regions...Ch. 2.4 - Prob. 13ECh. 2.4 - Sharpening Your Skills The numbers in the regions...Ch. 2.4 - Prob. 15ECh. 2.4 - Sharpening Your Skills The numbers in the regions...Ch. 2.4 - Sharpening Your Skills The numbers in the regions...Ch. 2.4 - Sharpening Your Skills The numbers in the regions...Ch. 2.4 - Sharpening Your Skills The numbers in the regions...Ch. 2.4 - Sharpening Your Skills The numbers in the regions...Ch. 2.4 - Sharpening Your Skills In Exercises 21 26, find,...Ch. 2.4 - Sharpening Your Skills In Exercises 21 26, find,...Ch. 2.4 - Sharpening Your Skills In Exercises 21 26, find,...Ch. 2.4 - Sharpening Your Skills In Exercises 21 26, find,...Ch. 2.4 - Sharpening Your Skills In Exercises 21 26, find,...Ch. 2.4 - Sharpening Your Skills In Exercises 21 26, find,...Ch. 2.4 - Applying What Youve Learned Automobile accidents....Ch. 2.4 - Applying What Youve Learned Concerns about social...Ch. 2.4 - Applying What Youve Learned There are 82 people...Ch. 2.4 - Applying What Youve Learned There are 95 students...Ch. 2.4 - Applying What Youve Learned Survey of vacationers....Ch. 2.4 - Applying What Youve Learned Search engine survey....Ch. 2.4 - Applying What Youve Learned Fitness survey....Ch. 2.4 - Applying What Youve Learned Academic services...Ch. 2.4 - Applying What Youve Learned 35. World issues...Ch. 2.4 - Prob. 36ECh. 2.4 - Prob. 37ECh. 2.4 - Applying What Youve Learned 38. Online music...Ch. 2.4 - Prob. 39ECh. 2.4 - Prob. 40ECh. 2.4 - Prob. 41ECh. 2.4 - Prob. 42ECh. 2.4 - Prob. 43ECh. 2.4 - Prob. 44ECh. 2.4 - Prob. 45ECh. 2.4 - Prob. 46ECh. 2.4 - Prob. 47ECh. 2.4 - Prob. 48ECh. 2.4 - A person can safely receive a transfusion from...Ch. 2.4 - Prob. 50ECh. 2.4 - Prob. 51ECh. 2.4 - Communicating Mathematics In Figure 2.13a,...Ch. 2.4 - Math in Your: Life: Between the Numbers Validity...Ch. 2.4 - Math in Your Life: Between the Numbers Validity of...Ch. 2.4 - Challenge Yourself As you saw in Section 2.3, a...Ch. 2.4 - Prob. 56ECh. 2.4 - Prob. 57ECh. 2.4 - Challenge Yourself Thinking along the lines of...Ch. 2.4 - Prob. 59ECh. 2.4 - Prob. 60ECh. 2.5 - Prob. 1ECh. 2.5 - Prob. 2ECh. 2.5 - Prob. 3ECh. 2.5 - Prob. 4ECh. 2.5 - Prob. 5ECh. 2.5 - Sharpening Your Skills In Exercises 1-8, show that...Ch. 2.5 - Prob. 7ECh. 2.5 - Sharpening Your Skills In Exercises 1-8, show that...Ch. 2.5 - In Exercises 9-12, we give an expression...Ch. 2.5 - In Exercises 9-12, we give an expression...Ch. 2.5 - In Exercises 9-12, we give an expression...Ch. 2.5 - In Exercises 9-12, we give an expression...Ch. 2.5 - Prob. 13ECh. 2.5 - Prob. 14ECh. 2.5 - Prob. 15ECh. 2.5 - Prob. 16ECh. 2.5 - Prob. 17ECh. 2.5 - Prob. 18ECh. 2.5 - Prob. 19ECh. 2.5 - Prob. 20ECh. 2.5 - Prob. 21ECh. 2.5 - Prob. 22ECh. 2.5 - In Example 3, we showed you how to match the...Ch. 2.5 - In Example 3, we showed you how to match the...Ch. 2.5 - In Example 3, we showed you how to match the...Ch. 2.5 - In Example 3, we showed you how to match the...Ch. 2.5 - Communicating Mathematics In Example 3, what did...Ch. 2.5 - Communicating Mathematics What was the essence of...Ch. 2.5 - Communicating Mathematics How would you convince...Ch. 2.5 - Communicating Mathematics How would you convince...Ch. 2.5 - Communicating Mathematics In Example 3, why did we...Ch. 2.5 - In constructing the number x in Example 4, how...Ch. 2.5 - Prob. 33ECh. 2.5 - Prob. 34ECh. 2.5 - The arithmetic of infinite cardinal numbers has...Ch. 2.5 - Prob. 36ECh. 2.5 - Imagine that we bend a line segment representing...Ch. 2.5 - Use an argument similar to that of Exercise 37 to...Ch. 2.CR - Prob. 1CRCh. 2.CR - Explain whyCh. 2.CR - Make up a bag diagram to illustrate the set 3, ,1,...Ch. 2.CR - Find the cardinal number of each of these sets....Ch. 2.CR - Prob. 5CRCh. 2.CR - Decide whether each statement is true and false....Ch. 2.CR - Prob. 7CRCh. 2.CR - Prob. 8CRCh. 2.CR - Prob. 9CRCh. 2.CR - Using the same sets as in Exercise 9, find the...Ch. 2.CR - Prob. 11CRCh. 2.CR - Use DeMorgans laws to represent (AB) in a...Ch. 2.CR - a. List three algebraic properties satisfied by...Ch. 2.CR - State the Inclusion-Exclusion Principle. What is a...Ch. 2.CR - Use the following information to answer the given...Ch. 2.CR - .A survey was taken of college freshman regarding...Ch. 2.CR - Prob. 17CRCh. 2.CR - What is the definition of an infinite set?Ch. 2.CR - Show that the set of natural numbers is infinite.Ch. 2.CR - In matching the rational numbers with the natural...Ch. 2.CR - In creating the number x in Example 4 in Section...Ch. 2.CT - Chapter Test Use an alternative method to express...Ch. 2.CT - Prob. 2CTCh. 2.CT - Prob. 3CTCh. 2.CT - Let U={1,2,3,...,10} and let A={1,2,5,6,9},...Ch. 2.CT - Explain why {}:Ch. 2.CT - Prob. 6CTCh. 2.CT - Prob. 7CTCh. 2.CT - Make up a bag diagram to illustrate the set...Ch. 2.CT - Prob. 9CTCh. 2.CT - Prob. 10CTCh. 2.CT - Prob. 11CTCh. 2.CT - Chapter Test Use the following information to...Ch. 2.CT - Chapter Test A survey was taken of drivers...Ch. 2.CT - Prob. 14CTCh. 2.CT - Prob. 15CTCh. 2.CT - Chapter Test In matching the rational numbers with...Ch. 2.CT - Chapter Test 17.In creating the number x in...Ch. 2.CT - Using the blood type classifications that we...
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