Discrete Mathematics with Graph Theory (Classic Version) (3rd Edition) (Pearson Modern Classics for Advanced Mathematics Series)
3rd Edition
ISBN: 9780134689555
Author: Edgar Goodaire, Michael Parmenter
Publisher: PEARSON
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Chapter 5, Problem 21RE
Let
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The set of all 3 x 3 upper triangular matrices
6) Determine whether each of the following sets, together with the standard
operations, is a vector space. If it is, then simply write 'Vector space'. You do not
have to prove all ten vector space axioms. If it is not, then identify one of the ten
vector space axioms with its number in the attached sheet that fails and also show
that how it fails.
a) The set of all polynomials of degree four or less.
b) The set of all 2 x 2 singular matrices.
c) The set {(x, y) : x ≥ 0, y is a real number}.
d) C[0,1], the set of all continuous functions defined on the interval [0,1].
7) Given u = (-2,1,1) and v = (4,2,0) are two vectors in R³-space. Find u xv and
show that it is orthogonal to both u and v.
8) a) Find the equation of the least squares regression line for the data points
below.
(-2,0), (0,2), (2,2)
b) Graph the points and the line that you found from a) on the same Cartesian
coordinate plane.
1. A consumer group claims that the mean annual consumption of cheddar cheese by a person in
the United States is at most 10.3 pounds. A random sample of 100 people in the United States has
a mean annual cheddar cheese consumption of 9.9 pounds. Assume the population standard
deviation is 2.1 pounds. At a = 0.05, can you reject the claim? (Adapted from U.S. Department of
Agriculture)
State the hypotheses:
Calculate the test statistic:
Calculate the P-value:
Conclusion (reject or fail to reject Ho):
2. The CEO of a manufacturing facility claims that the mean workday of the company's assembly
line employees is less than 8.5 hours. A random sample of 25 of the company's assembly line
employees has a mean workday of 8.2 hours. Assume the population standard deviation is 0.5
hour and the population is normally distributed. At a = 0.01, test the CEO's claim.
State the hypotheses:
Calculate the test statistic:
Calculate the P-value:
Conclusion (reject or fail to reject Ho):
Statistics
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1) a) Find a matrix P such that PT AP orthogonally diagonalizes the following matrix
A.
= [{² 1]
A =
b) Verify that PT AP gives the correct diagonal form.
2
01
-2
3
2) Given the following matrices A =
-1
0
1] an
and B =
0
1
-3
2
find the following matrices:
a) (AB) b) (BA)T
3) Find the inverse of the following matrix A using Gauss-Jordan elimination or
adjoint of the matrix and check the correctness of your answer (Hint: AA¯¹ = I).
[1 1 1
A = 3 5 4
L3 6 5
4) Solve the following system of linear equations using any one of Cramer's Rule,
Gaussian Elimination, Gauss-Jordan Elimination or Inverse Matrix methods and
check the correctness of your answer.
4x-y-z=1
2x + 2y + 3z = 10
5x-2y-2z = -1
5) a) Describe the zero vector and the additive inverse of a vector in the vector
space, M3,3.
b) Determine if the following set S is a subspace of M3,3 with the standard
operations. Show all appropriate supporting work.
Chapter 5 Solutions
Discrete Mathematics with Graph Theory (Classic Version) (3rd Edition) (Pearson Modern Classics for Advanced Mathematics Series)
Ch. 5.1 - True/False Questions The statement i=1n(2i1)=n2...Ch. 5.1 - Prob. 2TFQCh. 5.1 - Prob. 3TFQCh. 5.1 - Prob. 4TFQCh. 5.1 - Prob. 5TFQCh. 5.1 - Prob. 6TFQCh. 5.1 - Prob. 7TFQCh. 5.1 - Prob. 8TFQCh. 5.1 - Prob. 9TFQCh. 5.1 - Prob. 10TFQ
Ch. 5.1 - Prob. 1ECh. 5.1 - Prob. 2ECh. 5.1 - Prove that it is possible to fill an order for n32...Ch. 5.1 - Use mathematical induction to prove the truth of...Ch. 5.1 - Prove by mathematical induction that...Ch. 5.1 - Use mathematical induction to establish the truth...Ch. 5.1 - 7. Rewrite each of the sums in Exercise 6 using...Ch. 5.1 - 8. Use mathematical induction to establish each of...Ch. 5.1 - 9. Use mathematical induction to establish the...Ch. 5.1 - Prob. 10ECh. 5.1 - Prob. 11ECh. 5.1 - Prob. 12ECh. 5.1 - Prob. 13ECh. 5.1 - Prob. 14ECh. 5.1 - Prob. 15ECh. 5.1 - Prob. 16ECh. 5.1 - Prob. 17ECh. 5.1 - Prob. 18ECh. 5.1 - Prob. 19ECh. 5.1 - Prob. 20ECh. 5.1 - 21. Prove the Chinese Remainder Theorem, 4.5.1, by...Ch. 5.1 - Prob. 22ECh. 5.1 - Prob. 23ECh. 5.1 - Prob. 24ECh. 5.1 - Prob. 25ECh. 5.1 - Prob. 26ECh. 5.1 - Prob. 27ECh. 5.1 - Prob. 28ECh. 5.1 - Prob. 29ECh. 5.1 - Given an equal arm balance capable of determining...Ch. 5.1 - Prob. 31ECh. 5.1 - 32. Let be any integer greater than 1. Show that...Ch. 5.1 - Prob. 33ECh. 5.1 - Prob. 34ECh. 5.1 - Prob. 35ECh. 5.1 - Prob. 36ECh. 5.1 - Prob. 37ECh. 5.1 - 38. For a given natural number prove that the set...Ch. 5.1 - 39. (a) Prove that the strong form of the...Ch. 5.1 - Prob. 40ECh. 5.1 - Prob. 41ECh. 5.2 - True/False Questions
If and for , then .
Ch. 5.2 - Prob. 2TFQCh. 5.2 - Prob. 3TFQCh. 5.2 - Prob. 4TFQCh. 5.2 - Prob. 5TFQCh. 5.2 - Prob. 6TFQCh. 5.2 - Prob. 7TFQCh. 5.2 - True/False Questions The Fibonacci sequence arose...Ch. 5.2 - Prob. 9TFQCh. 5.2 - Prob. 10TFQCh. 5.2 - Give recursive definitions of each of the...Ch. 5.2 - Find the first seven terms of the sequence {an}...Ch. 5.2 - Let a1,a2,a3,...... be the sequence defined by...Ch. 5.2 - Prob. 4ECh. 5.2 - Prob. 5ECh. 5.2 - Prob. 6ECh. 5.2 - Prob. 7ECh. 5.2 - 8. Suppose is a sequence such that and, for, ....Ch. 5.2 - Prob. 9ECh. 5.2 - Prob. 10ECh. 5.2 - Prob. 11ECh. 5.2 - Prob. 12ECh. 5.2 - Prob. 13ECh. 5.2 - Prob. 14ECh. 5.2 - Prob. 15ECh. 5.2 - Prob. 16ECh. 5.2 - Prob. 17ECh. 5.2 - 18. Consider the arithmetic sequence with first...Ch. 5.2 - Prob. 19ECh. 5.2 - Prob. 20ECh. 5.2 - Prob. 21ECh. 5.2 - Prob. 22ECh. 5.2 - Prob. 23ECh. 5.2 - Prob. 24ECh. 5.2 - Prob. 25ECh. 5.2 - Prob. 26ECh. 5.2 - Prob. 27ECh. 5.2 - Prob. 28ECh. 5.2 - Prob. 29ECh. 5.2 - Prob. 30ECh. 5.2 - Prob. 31ECh. 5.2 - 32. (a) Find the 19th and 100th terms of the...Ch. 5.2 - Given that each sum below is the sum of part of an...Ch. 5.2 - Prob. 34ECh. 5.2 - 35. Is it possible for an arithmetic sequence to...Ch. 5.2 - Prob. 36ECh. 5.2 - Prob. 37ECh. 5.2 - Prob. 38ECh. 5.2 - Prob. 39ECh. 5.2 - Prob. 40ECh. 5.2 - Prob. 41ECh. 5.2 - Prob. 42ECh. 5.2 - Prob. 43ECh. 5.2 - 44. Define a sequence recursively as follows:
...Ch. 5.2 - Prob. 45ECh. 5.2 - Prob. 46ECh. 5.2 - Prob. 47ECh. 5.2 - 48. Represent the Fibonacci sequence by , for...Ch. 5.2 - Prob. 49ECh. 5.2 - Prob. 50ECh. 5.2 - Prob. 51ECh. 5.2 - Prob. 52ECh. 5.2 - Prob. 53ECh. 5.2 - Prob. 54ECh. 5.2 - Prob. 55ECh. 5.2 - Prob. 56ECh. 5.2 - Prob. 57ECh. 5.2 - Prob. 58ECh. 5.3 - True/False Questions
The recurrence relation can...Ch. 5.3 - Prob. 2TFQCh. 5.3 - Prob. 3TFQCh. 5.3 - Prob. 4TFQCh. 5.3 - Prob. 5TFQCh. 5.3 - Prob. 6TFQCh. 5.3 - Prob. 7TFQCh. 5.3 - Prob. 8TFQCh. 5.3 - Prob. 9TFQCh. 5.3 - Prob. 10TFQCh. 5.3 - Solve the recurrence relation, , given .
Ch. 5.3 - Prob. 2ECh. 5.3 - Solve the recurrence relation, , given .
Ch. 5.3 - Solve the recurrence relation an+1=7an10an1, n2,...Ch. 5.3 - Prob. 5ECh. 5.3 - 6. Solve the recurrence relation, , given
Ch. 5.3 - 7. Solve the recurrence relation , , given .
Ch. 5.3 - 8. Solve the recurrence relation , , given ....Ch. 5.3 - 9. Solve the recurrence relation , , given ....Ch. 5.3 - 10. (a) Solve the recurrence relation , , given ....Ch. 5.3 - Prob. 11ECh. 5.3 - Prob. 12ECh. 5.3 - Solve the recurrence relation an=5an16an2, n2,...Ch. 5.3 - Prob. 14ECh. 5.3 - Prob. 15ECh. 5.3 - Solve the recurrence relation an=4an14an2+n, n2,...Ch. 5.3 - Prob. 17ECh. 5.3 - Prob. 18ECh. 5.3 - Prob. 19ECh. 5.3 - Prob. 20ECh. 5.3 - Prob. 21ECh. 5.3 - Prob. 22ECh. 5.3 - 23. The Towers of Hanoi is a popular puzzle. It...Ch. 5.3 - 24. Suppose we modify the traditional rules for...Ch. 5.3 - Prob. 25ECh. 5.3 - Prob. 26ECh. 5.3 - Prob. 27ECh. 5.4 - Prob. 1TFQCh. 5.4 - Prob. 2TFQCh. 5.4 - Prob. 3TFQCh. 5.4 - Prob. 4TFQCh. 5.4 - Prob. 5TFQCh. 5.4 - Prob. 6TFQCh. 5.4 - Prob. 7TFQCh. 5.4 - Prob. 8TFQCh. 5.4 - Prob. 9TFQCh. 5.4 - Prob. 10TFQCh. 5.4 - Prob. 1ECh. 5.4 - Prob. 2ECh. 5.4 - Prob. 3ECh. 5.4 - Prob. 4ECh. 5.4 - Prob. 5ECh. 5.4 - Prob. 6ECh. 5.4 - Prob. 7ECh. 5.4 - Prob. 8ECh. 5.4 - Prob. 9ECh. 5.4 - Prob. 10ECh. 5.4 - Prob. 11ECh. 5.4 - Prob. 12ECh. 5.4 - Prob. 13ECh. 5.4 - Prob. 14ECh. 5 - Use mathematical induction to show that...Ch. 5 - Using mathematical induction, show that
for all...Ch. 5 - Using mathematical induction, show that (112)n1n2...Ch. 5 - Prove that for all integers.
Ch. 5 - 5. Use mathematical induction to prove that is...Ch. 5 - 6. Prove that for all.
Ch. 5 - Prob. 7RECh. 5 - 8. (a) Give an example of a function with domaina...Ch. 5 - Give a recursive definition of each of the...Ch. 5 - Guess a simple formula for each of the following...Ch. 5 - 11. Consider the sequence defined by and for. What...Ch. 5 - 12. Find the sum.
Ch. 5 - 13. Let be defined recursively by and, for , ....Ch. 5 - Define f:ZZ by f(a)=34a, and for tZ define a...Ch. 5 - Consider the arithmetic sequence that begins...Ch. 5 - 16. The first two terms of a sequence are 6 and 2....Ch. 5 - 17. Let be the first four terms of an arithmetic...Ch. 5 - Explain why the sum of 500 terms of the series...Ch. 5 - 19. (a) Define the Fibonacci sequence.
(b) Is it...Ch. 5 - Show that, for n2, the nth term of the Fibonacci...Ch. 5 - Let f1,f2,....... be the Fibonacci sequence as...Ch. 5 - Suppose you walk up a flight of stairs one or two...Ch. 5 - 23. Solve the recurrence relation given that and...Ch. 5 - Solve Exercise 23 using the method of generating...Ch. 5 - 25. Find a formula for, given and for .
Ch. 5 - Let an be the sequence defined by a0=2,a1=1, and...Ch. 5 - Prob. 27RECh. 5 - Prob. 28RECh. 5 - Prob. 29RECh. 5 - 30. (For students of calculus) Let denote the...
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