Mathematics For Machine Technology
8th Edition
ISBN: 9781337798310
Author: Peterson, John.
Publisher: Cengage Learning,
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Chapter 20, Problem 31A
To determine
The unknown value and verify the result.
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3. 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?
Q4
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.
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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.
Chapter 20 Solutions
Mathematics For Machine Technology
Ch. 20 - Use a decimal equivalents table to find the...Ch. 20 - Compute (27.52.5+4.36)21.75 . Express the result...Ch. 20 - A cylinder has a volume, V, of 32.85 mm3. Use the...Ch. 20 - The volume V of a cube is V=s3 , where s is the...Ch. 20 - Multiply 15.328.75 .Ch. 20 - Express the decimal fraction 0.4275 as a common...Ch. 20 - Prob. 7ACh. 20 - Express the following ratios in lowest fractional...Ch. 20 - Prob. 9ACh. 20 - Express the following ratios in lowest fractional...
Ch. 20 - Prob. 11ACh. 20 - Prob. 12ACh. 20 - Prob. 13ACh. 20 - Express the following ratios in lowest fractional...Ch. 20 - Prob. 15ACh. 20 - Express the following ratios in lowest fractional...Ch. 20 - Length A in Figure 205 is 3 inches and length B is...Ch. 20 - Prob. 18ACh. 20 - Prob. 19ACh. 20 - In Figure 208, gear A is turning at 120...Ch. 20 - Solve for the unknown value in each of the...Ch. 20 - Solve for the unknown value in each of the...Ch. 20 - Prob. 23ACh. 20 - Prob. 24ACh. 20 - Prob. 25ACh. 20 - Prob. 26ACh. 20 - Prob. 27ACh. 20 - Solve for the unknown value in each of the...Ch. 20 - Solve for the unknown value in each of the...Ch. 20 - Prob. 30ACh. 20 - Prob. 31ACh. 20 - Prob. 32ACh. 20 - Prob. 33ACh. 20 - Prob. 34ACh. 20 - Prob. 35ACh. 20 - Prob. 36ACh. 20 - Prob. 37ACh. 20 - Prob. 38ACh. 20 - Prob. 39ACh. 20 - Prob. 40ACh. 20 - Prob. 41ACh. 20 - Prob. 42ACh. 20 - The proportion AB=CDcompares the sides of two...Ch. 20 - Prob. 44ACh. 20 - It is sometimes impractical to make engineering...Ch. 20 - Prob. 46ACh. 20 - Prob. 47ACh. 20 - A drawing has a scale of 14=3 . Determine the...
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