Mathematics For Machine Technology
8th Edition
ISBN: 9781337798310
Author: Peterson, John.
Publisher: Cengage Learning,
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Textbook Question
Chapter 59, Problem 2A
Find the length of x. Round the answer to 2 decimal places.
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Pidgeonhole Principle
1. The floor of x, written [x], also called the integral part, integer part, or greatest integer, is defined
as the greatest integer less than or equal to x. Similarly the ceiling of x, written [x], is the smallest
integer greater than or equal to x. Try figuring out the answers to the following:
(a) [2.1]
(b) [2]
(c) [2.9]
(d) [2.1]
(e) [2]
(f) [2.9]
2. The simple pidgeonhole principle states that, if you have N places and k items (k> N), then at
least one hole must have more than one item in it. We tried this with chairs and students: Assume you
have N = 12 chairs and k = 18 students. Then at least one chair must have more than one student on
it.
3. The general pidgeonhole principle states that, if you have N places and k items, then at least one
hole must have [] items or more in it. Try this out with
(a) n = 10 chairs and k = 15 students
(b) n = 10 chairs and k = 23 students
(c) n = 10 chairs and k = 20 students
4. There are 34 problems on these pages, and we…
Determine if the set of vectors is linearly independent or linearly dependent.
linearly independent
O linearly dependent
Save Answer
Q2.2
1 Point
Determine if the set of vectors spans R³.
they span R³
they do not span R³
Save Answer
23
Q2.3
1 Point
Determine if the set of vectors is linearly independent or linearly dependent.
linearly independent
O linearly dependent
Save Answer
1111
1110
Q2.4
1 Point
Determine if the set of vectors spans R4.
O they span R4
they do not span IR4
1000;
111O'
Chapter 59 Solutions
Mathematics For Machine Technology
Ch. 59 - Trace this line segment two times. On one copy...Ch. 59 - Find the length of x. Round the answer to 2...Ch. 59 - Prob. 3ACh. 59 - Prob. 4ACh. 59 - Prob. 5ACh. 59 - Prob. 6ACh. 59 - Prob. 7ACh. 59 - Prob. 8ACh. 59 - Prob. 9ACh. 59 - Prob. 10A
Ch. 59 - Prob. 11ACh. 59 - Prob. 12ACh. 59 - Prob. 13ACh. 59 - Express each area as indicated. Round each answer...Ch. 59 - Prob. 15ACh. 59 - Prob. 16ACh. 59 - Prob. 17ACh. 59 - Prob. 18ACh. 59 - Prob. 19ACh. 59 - Prob. 20ACh. 59 - Prob. 21ACh. 59 - Prob. 22ACh. 59 - Prob. 23ACh. 59 - Prob. 24ACh. 59 - Prob. 25ACh. 59 - Prob. 26ACh. 59 - Prob. 27ACh. 59 - Prob. 28ACh. 59 - Prob. 29ACh. 59 - Prob. 30ACh. 59 - Prob. 31ACh. 59 - Prob. 32ACh. 59 - Prob. 33ACh. 59 - Prob. 34ACh. 59 - Prob. 35ACh. 59 - Prob. 36ACh. 59 - Prob. 37ACh. 59 - Prob. 38ACh. 59 - Prob. 39ACh. 59 - Prob. 40ACh. 59 - Prob. 41ACh. 59 - Prob. 42ACh. 59 - Prob. 43ACh. 59 - Prob. 44ACh. 59 - Prob. 45ACh. 59 - Prob. 46ACh. 59 - Prob. 47ACh. 59 - Prob. 48ACh. 59 - Prob. 49ACh. 59 - Prob. 50ACh. 59 - Prob. 51ACh. 59 - Prob. 52ACh. 59 - Prob. 53ACh. 59 - Prob. 54ACh. 59 - Prob. 55ACh. 59 - Prob. 56ACh. 59 - Prob. 57ACh. 59 - Prob. 58ACh. 59 - Prob. 59ACh. 59 - Prob. 60ACh. 59 - Prob. 61ACh. 59 - Prob. 62ACh. 59 - Prob. 63ACh. 59 - Prob. 64ACh. 59 - Prob. 65ACh. 59 - Prob. 66ACh. 59 - Prob. 67ACh. 59 - Prob. 68ACh. 59 - Prob. 69ACh. 59 - Prob. 70ACh. 59 - Prob. 71ACh. 59 - Prob. 72ACh. 59 - Prob. 73ACh. 59 - Prob. 74ACh. 59 - Find the unknown area, height, or base for each of...Ch. 59 - Find the unknown area, height, or base for each of...Ch. 59 - A cross section of an aluminum bar in the shape of...Ch. 59 - Prob. 78ACh. 59 - Prob. 79ACh. 59 - One of the examples showed how to find the area of...
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- The everything combined problem Suppose that a computer science laboratory has 15 workstations and 10 servers. A cable can be used to directly connect a workstation to a server. For each server, only one direct connection to that server can be active at any time. 1. How many cables would you need to connect each station to each server? 2. How many stations can be used at one time? 3. How many stations can not be used at any one time? 4. How many ways are there to pick 10 stations out of 15? 5. (This one is tricky) We want to guarantee that at any time any set of 10 or fewer workstations can simultaneously access different servers via direct connections. What is the minimum number of direct connections needed to achieve this goal?arrow_forwardCan you help me with D and Earrow_forwardQ1.1 1 Point Any set {V1, V2, V3, V4} that consists of four different vectors from R cannot possibly span Rº. True False Save Answerarrow_forward
- 4. Let A {w, e, s, t, f, i, e, l, d, s, t, a, t, e}. (a) How many different words (they do not have to make sense) can you spell with the letters in A? (b) Is your answer from above the same as the cardinality of the powerset of A, i.e. of P(A)? (c) What is |A|?arrow_forward5. How many numbers can you make out of the digits 1, 2, 3, 4, 6 if the rule is that every digit has to be larger than the digit preceding it? For example 124 is ok, 122 is not ok. Every digit can be used only once, but you do not have to use every digit. A tree might help.arrow_forwardCan you help me with f and g?What they are asking is, what do you shade in? Not the power set. At least for Farrow_forward
- Q3 3 Points 1 0 2 4 0 6 01 5 - -1 0 10 00 0 0 1 1 The reduced row echelon form of the augmented matrix of a linear system is given above. Describe the solution set of this linear system in parametric vector form. Please select file(s) Select file(s) Save Answerarrow_forward3. Suppose you have 12 professors in a department and you have to chose members of departmental committees. (a) How many ways can you pick members for one 4 people committee? (b) How many ways can you pick members for two different 4 people committees if no-one can serve on both committees? (c) How many ways can you pick members for two different 4 people committees if people can serve on both committees? (d) How about if you need members for a 4 person, a 5 person, and a 3 person committee, people cannot serve on more than one committee? (e) How about if you need members for a 4 person, a 5 person, and a 3 person committee, people can serve on more than one committee? (f) How about if you need members for a 4 person, a 5 person, and a 3 person committee, people cannot serve on more than one committee, and the first person chosen for each committee serves as chair?arrow_forwardQ4 3 Points 1 Let A = 2 3 7 5 11 Give one nontrivial solution X of the homogeneous system Ax = 0. (Your vector x should have explicit numbers as its entries, as opposed to variables/parameters). Show your work for how you found it. Please select file(s) Select file(s) Save Answerarrow_forward
- 4. Assume that a risk-free money market account is added to the market described in Q3. The continuously compounded rate of return on the money market account is log (1.1). (i) For each given μ, use Lagrange multipliers to determine the proportions (as a function of μ) of wealth invested in the three assets available for the minimum variance portfolio with expected return μ. (ii) Determine the market portfolio in this market and calculate its Sharp ratio.arrow_forward3. A market consists of two risky assets with rates of return R₁ and R2 and no risk-free asset. From market data the following have been estimated: ER₁ = 0.25, ER2 = 0.05, Var R₁ = 0.01, Var R2 = 0.04 and the correlation between R1 and R2 is p = -0.75. (i) Given that an investor is targeting a total expected return of μ = 0.2. What portfolio weights should they choose to meet this goal with minimum portfolio variance? Correct all your calculations up to 4 decimal points. (ii) Determine the global minimum-variance portfolio and the expected return and variance of return of this portfolio (4 d.p.). (iii) Sketch the minimum-variance frontier in the μ-σ² plane and indicate the efficient frontier. (iv) Without further calculation, explain how the minimum variance of the investor's portfolio return will change if the two risky assets were independent.arrow_forward2. A landlord is about to write a rental contract for a tenant which lasts T months. The landlord first decides the length T > 0 (need not be an integer) of the contract, the tenant then signs it and pays an initial handling fee of £100 before moving in. The landlord collects the total amount of rent erT at the end of the contract at a continuously compounded rate r> 0, but the contract stipulates that the tenant may leave before T, in which case the landlord only collects the total rent up until the tenant's departure time 7. Assume that 7 is exponentially distributed with rate > 0, λ‡r. (i) Calculate the expected total payment EW the landlord will receive in terms of T. (ii) Assume that the landlord has logarithmic utility U(w) = log(w - 100) and decides that the rental rate r should depend on the contract length T by r(T) = λ √T 1 For each given λ, what T (as a function of X) should the landlord choose so as to maximise their expected utility? Justify your answer. Hint. It might be…arrow_forward
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