DISCRETE MATHEMATICS+ITS APPL. (LL)-W/A
8th Edition
ISBN: 9781260521337
Author: ROSEN
Publisher: MCG
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Textbook Question
Chapter 10, Problem 37SE
An orientationof an undirected simple graph is an assignment of directions to its edges such that the resulting directed graph is strongly connected. When an orientation of an undirected graph exists, this graph is calledorientable.In Exercises 35-37 determine whether the given simple graph is orientable.
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Consider the initial value problem
mx" + cx' + kx = F(t),
x(0) = 0, x'(0) = 0
modeling the motion of a damped mass-spring system initially at rest and subjected to an
applied force F(t), where the unit of force is the Newton (N). Assume that m = = 2
kilograms, c = 8 kilograms per second, k 80 Newtons per meter, and F(t) = 20e¯*
=
Newtons.
Solve the initial value problem.
x(t) =
=
help (formulas)
Determine the long-term behavior of the system (steady periodic solution). Is lim x(t) = 0
t→∞
? If it is, enter zero. If not, enter a function that approximates x(t) for very large positive
values of t.
For very large positive values of t,
x(t) ≈ x sp(t)
=
help (formulas)
Book: Section 2.6 of Notes on Diffy Qs
Consider the initial value problem
mx" + cx' + kx = F(t), x(0) = 0, x'(0) = 0
modeling the motion of a damped mass-spring system initially at rest and subjected to an
applied force F(t), where the unit of force is the Newton (N). Assume that m = 2
kilograms, c = 8 kilograms per second, k = 80 Newtons per meter, and
F(t) = 100 cos(8t) Newtons.
Solve the initial value problem.
x(t) =
help (formulas)
Determine the long-term behavior of the system (steady periodic solution). Is lim x(t) = 0
t→∞
? If it is, enter zero. If not, enter a function that approximates x(t) for very large positive
values of t.
For very large positive values of t,
x(t)≈ x sp(t)
=
help (formulas)
Book: Section 2.6 of Notes on Diffy Qs
Chapter 10 Solutions
DISCRETE MATHEMATICS+ITS APPL. (LL)-W/A
Ch. 10.1 - Draw graph models, stating the type of graph...Ch. 10.1 - Prob. 2ECh. 10.1 - For Exercises 3-5, determine whether the graph...Ch. 10.1 - For Exercises 3-5, determine whether the graph...Ch. 10.1 - For Exercises 3-5, determine whether the graph...Ch. 10.1 - For Exercises 3-5, determine whether the graph...Ch. 10.1 - For Exercises 3-5, determine whether the graph...Ch. 10.1 - For Exercises 3-5, determine whether the graph...Ch. 10.1 - For Exercises 3-5, determine whether the graph...Ch. 10.1 - For each undirected graph in Exercises 3-9 that is...
Ch. 10.1 - Let G be a simple graph. Show that the relation R...Ch. 10.1 - Let G be an undirected graph with a loop at every...Ch. 10.1 - The intersection graphof a collection of...Ch. 10.1 - Use the niche overlap graph inFigure 11to...Ch. 10.1 - Construct a niche overlap graph for six species of...Ch. 10.1 - Draw the acquaintanceship graph that represents...Ch. 10.1 - Prob. 17ECh. 10.1 - Who can influence Fred and whom can Fred influence...Ch. 10.1 - Construct an influence graph for the board members...Ch. 10.1 - The word apple can refer to a plant, a food, or a...Ch. 10.1 - Prob. 21ECh. 10.1 - Which other teams did Team 4 beat and which teams...Ch. 10.1 - In a round-robin tournament the Tigers beat the...Ch. 10.1 - Construct the call graph for a set of seven...Ch. 10.1 - Explain how the two telephone call graphs for...Ch. 10.1 - a) Explain how graphs can be used to model...Ch. 10.1 - How can a graph that models e-mail messages sent...Ch. 10.1 - How can a graph that models e-mail messages sent...Ch. 10.1 - Describe a graph model that represents whether...Ch. 10.1 - Describe a graph model that represents a subway...Ch. 10.1 - Prob. 31ECh. 10.1 - Describe a graph model that represents the...Ch. 10.1 - Describe a graph model that represents traditional...Ch. 10.1 - Prob. 34ECh. 10.1 - Construct a precedence graph for the following...Ch. 10.1 - Describe a discrete structure based on a graph...Ch. 10.1 - Describe a discrete structure based on a graph...Ch. 10.1 - Prob. 38ECh. 10.2 - In Exercises 1-3 find the number of vertices, the...Ch. 10.2 - In Exercises 1-3 find the number of vertices, the...Ch. 10.2 - Prob. 3ECh. 10.2 - Prob. 4ECh. 10.2 - Can a simple graph exist with 15 vertices each of...Ch. 10.2 - Show that the sum, over the set of people at a...Ch. 10.2 - Prob. 7ECh. 10.2 - Prob. 8ECh. 10.2 - Prob. 9ECh. 10.2 - For each of the graphs in Exercises 7-9 determine...Ch. 10.2 - Construct the underlying undirected graph for the...Ch. 10.2 - What does the degree of a vertex represent in the...Ch. 10.2 - Prob. 13ECh. 10.2 - What does the degree of a vertex in the Hollywood...Ch. 10.2 - What do the in-degree and the out-degree of a...Ch. 10.2 - Prob. 16ECh. 10.2 - Prob. 17ECh. 10.2 - Show that in a simple graph with at least two...Ch. 10.2 - Use Exercise 18 to show that in a group of people,...Ch. 10.2 - Prob. 20ECh. 10.2 - In Exercises 21-25 determine whether the graph is...Ch. 10.2 - In Exercises 21-25 determine whether the graph is...Ch. 10.2 - Prob. 23ECh. 10.2 - Prob. 24ECh. 10.2 - In Exercises 21-25 determine whether the graph is...Ch. 10.2 - For which values ofnare these graphs bipartite?...Ch. 10.2 - Suppose that therearefour employees in the...Ch. 10.2 - Suppose that a new company has five employees:...Ch. 10.2 - Suppose that therearefive young women and five...Ch. 10.2 - Suppose that therearefive young women and six...Ch. 10.2 - Prob. 31ECh. 10.2 - Each of Exercises 31-33 can be solved using Hall's...Ch. 10.2 - Prob. 33ECh. 10.2 - Prob. 34ECh. 10.2 - Each of Exercises 31-33 can be solved using Hall's...Ch. 10.2 - Prob. 36ECh. 10.2 - How many vertices and how many edges do these...Ch. 10.2 - Prob. 38ECh. 10.2 - Prob. 39ECh. 10.2 - Prob. 40ECh. 10.2 - Prob. 41ECh. 10.2 - How many edges does a graph have if its degree...Ch. 10.2 - Prob. 43ECh. 10.2 - Determine whether each of these sequences is...Ch. 10.2 - Prob. 45ECh. 10.2 - Prob. 46ECh. 10.2 - Prob. 47ECh. 10.2 - Prob. 48ECh. 10.2 - Prob. 49ECh. 10.2 - Prob. 50ECh. 10.2 - Prob. 51ECh. 10.2 - Prob. 52ECh. 10.2 - Draw all sub graphs of this graph.Ch. 10.2 - Let G be a graph with vertices and e edges. Let M...Ch. 10.2 - For which values ofnare these graphs regular? a)...Ch. 10.2 - Prob. 56ECh. 10.2 - Prob. 57ECh. 10.2 - In Exercises 58-60 find the union of the given...Ch. 10.2 - Prob. 59ECh. 10.2 - In Exercises 58-60 find the union of the given...Ch. 10.2 - The complementarygraphGof a simple graph G has the...Ch. 10.2 - IfGis a simple graph with 15 edges andGhas 13...Ch. 10.2 - Prob. 63ECh. 10.2 - Prob. 64ECh. 10.2 - Prob. 65ECh. 10.2 - Prob. 66ECh. 10.2 - Prob. 67ECh. 10.2 - Describe an algorithm to decide whether a graph is...Ch. 10.2 - Theconverseof a directed graph G = (V, E), denoted...Ch. 10.2 - Theconverseof a directed graph G = (V, E), denoted...Ch. 10.2 - Prob. 71ECh. 10.2 - Prob. 72ECh. 10.2 - Theconverseof a directed graph G = (V, E), denoted...Ch. 10.2 - Prob. 74ECh. 10.2 - Theconverseof a directed graph G = (V, E), denoted...Ch. 10.3 - In Exercises 1-4 use an adjacency list to...Ch. 10.3 - Prob. 2ECh. 10.3 - Prob. 3ECh. 10.3 - Prob. 4ECh. 10.3 - Represent the graph in Exercise 1 with an...Ch. 10.3 - Represent the graph in Exercise 2 with an...Ch. 10.3 - Represent the graph in Exercise 3 with an...Ch. 10.3 - Represent the graph in Exercise 4 with an...Ch. 10.3 - Represent each of these graphs with an adjacency...Ch. 10.3 - In Exercises 10-12 draw a graph with the given...Ch. 10.3 - In Exercises 10-12 draw a graph with the given...Ch. 10.3 - In Exercises 10-12 draw a graph with the given...Ch. 10.3 - In Exercises 13-15 represent the given graph using...Ch. 10.3 - In Exercises 13-15 represent the given graph using...Ch. 10.3 - In Exercises 13-15 represent the given graph using...Ch. 10.3 - In Exercises 16-18 draw an undirected graph...Ch. 10.3 - In Exercises 16-18 draw an undirected graph...Ch. 10.3 - In Exercises 16-18 draw an undirected graph...Ch. 10.3 - Prob. 19ECh. 10.3 - In Exercises 19-21 find the adjacency matrix of...Ch. 10.3 - In Exercises 19-21 find the adjacency matrix of...Ch. 10.3 - In Exercises 22-24 draw the graph represented by...Ch. 10.3 - In Exercises 22-24 draw the graph represented by...Ch. 10.3 - In Exercises22-24 draw the graph represented by...Ch. 10.3 - Find the density of the graph in a)Figure...Ch. 10.3 - Prob. 26ECh. 10.3 - Prob. 27ECh. 10.3 - Prob. 28ECh. 10.3 - Is every zero-one square matrix that is symmetric...Ch. 10.3 - Prob. 30ECh. 10.3 - Prob. 31ECh. 10.3 - Prob. 32ECh. 10.3 - What is me sum of me entries in a column of me...Ch. 10.3 - What is the sum of the entries in a row of the...Ch. 10.3 - What is the sum of the entries in a column of the...Ch. 10.3 - Find an adjacency matrix for each of these graphs....Ch. 10.3 - Prob. 37ECh. 10.3 - In Exercises 38-48 determine whether the given...Ch. 10.3 - In Exercises 38-48 determine whether the given...Ch. 10.3 - In Exercises 38-48 determine whether the given...Ch. 10.3 - In Exercises 38-48 determine whether the given...Ch. 10.3 - In Exercises 38-48 determine whether the given...Ch. 10.3 - In Exercises 38-48 determine whether the given...Ch. 10.3 - In Exercises 38-48 determine whether the given...Ch. 10.3 - In Exercises 38-48 determine whether the given...Ch. 10.3 - In Exercises 38-48 determine whether the given...Ch. 10.3 - In Exercises 38-48 determine whether the given...Ch. 10.3 - In Exercises 38-48 determine whether the given...Ch. 10.3 - Show that isomorphism of simple graphs is an...Ch. 10.3 - Prob. 50ECh. 10.3 - Prob. 51ECh. 10.3 - Prob. 52ECh. 10.3 - Prob. 53ECh. 10.3 - Prob. 54ECh. 10.3 - Prob. 55ECh. 10.3 - Prob. 56ECh. 10.3 - Prob. 57ECh. 10.3 - How many non isomorphic simple graphs are there...Ch. 10.3 - How many nonisomorphic simple graphs are there...Ch. 10.3 - How many nonisomorphic simple graphs are there...Ch. 10.3 - Prob. 61ECh. 10.3 - Prob. 62ECh. 10.3 - Are the simple graphswiththe following adjacency...Ch. 10.3 - Determine whether the graphs without loops with...Ch. 10.3 - Prob. 65ECh. 10.3 - Prob. 66ECh. 10.3 - Prob. 67ECh. 10.3 - In Exercises 67-70 determine whether the given...Ch. 10.3 - Prob. 69ECh. 10.3 - In Exercises 67-70 determine whether the given...Ch. 10.3 - Show that ifGand H are isomorphic directed graphs,...Ch. 10.3 - Show that the property that a graph is bipartite...Ch. 10.3 - Prob. 73ECh. 10.3 - Prob. 74ECh. 10.3 - Prob. 75ECh. 10.3 - How much storage is needed to represent a simple...Ch. 10.3 - A devil's pairfor a purported isomorphism testis a...Ch. 10.3 - Prob. 78ECh. 10.4 - Does each of these lists of vertices form a path...Ch. 10.4 - Does each of these lists of vertices form a path...Ch. 10.4 - In Exercises 3-5 determine whether the given graph...Ch. 10.4 - In Exercises 3-5 determine whether the given graph...Ch. 10.4 - In Exercises 3-5 determine whether the given graph...Ch. 10.4 - How many connected components does each of the...Ch. 10.4 - What do the connected components of...Ch. 10.4 - Prob. 8ECh. 10.4 - Explain why in the collaboration graph of...Ch. 10.4 - In the Hollywood graph (see Example 3 inSection...Ch. 10.4 - Determine whether each of these graphs is strongly...Ch. 10.4 - Determine whether each of these graphs is strongly...Ch. 10.4 - What do the strongly connected components of a...Ch. 10.4 - Find the strongly connected components of each of...Ch. 10.4 - Find the strongly connected components of each of...Ch. 10.4 - Suppose that G=(V, E) is a directed graph. A...Ch. 10.4 - Prob. 17ECh. 10.4 - Prob. 18ECh. 10.4 - Find the number of paths of length n between two...Ch. 10.4 - Use paths either to show that these graphs are not...Ch. 10.4 - Prob. 21ECh. 10.4 - Prob. 22ECh. 10.4 - Prob. 23ECh. 10.4 - Find the number of paths of length n between any...Ch. 10.4 - Find the number of paths of length n between any...Ch. 10.4 - Find the number of paths between c andd inthe...Ch. 10.4 - Prob. 27ECh. 10.4 - Prob. 28ECh. 10.4 - Prob. 29ECh. 10.4 - Show that in every simple graph there is a path...Ch. 10.4 - In Exercises 31-33 find all the cut vertices of...Ch. 10.4 - In Exercises 31-33 find all the cut vertices of...Ch. 10.4 - Prob. 33ECh. 10.4 - Find all the cut edges in the graph sin Exercises...Ch. 10.4 - Prob. 35ECh. 10.4 - Prob. 36ECh. 10.4 - Prob. 37ECh. 10.4 - Prob. 38ECh. 10.4 - Prob. 39ECh. 10.4 - A vertex basis in a directed graph G is aminimal...Ch. 10.4 - Prob. 41ECh. 10.4 - Prob. 42ECh. 10.4 - Prob. 43ECh. 10.4 - Use Exercise43 to show that a simple graph with n...Ch. 10.4 - Show that a simple graph G withnvertices is...Ch. 10.4 - Prob. 46ECh. 10.4 - How many nonisom orphic connected simple graphs...Ch. 10.4 - Show that each of the following graphs has no cut...Ch. 10.4 - Prob. 49ECh. 10.4 - For each of these graphs, find(G),(G),and...Ch. 10.4 - Show that if G is a connected graph, then it is...Ch. 10.4 - Show that if G is a connected graph withnvertices...Ch. 10.4 - Find(Km,n) and(Km,n), wherem andnare positive...Ch. 10.4 - Construct a graphG with(G) - 1,(G) -2, and...Ch. 10.4 - Show that if G is a graph, then(G) (G).Ch. 10.4 - ExplainhowTheorem 2canbe used to find the length...Ch. 10.4 - Prob. 57ECh. 10.4 - Prob. 58ECh. 10.4 - Prob. 59ECh. 10.4 - Show that the existence of a simple circuit of...Ch. 10.4 - Prob. 61ECh. 10.4 - Use Exercise 61 to show that the...Ch. 10.4 - Prob. 63ECh. 10.4 - In an old puzzle attributed to Alcuin of York...Ch. 10.4 - Use a graph model and a path in your graph, as in...Ch. 10.4 - Prob. 66ECh. 10.5 - In Exercises 1-8 determine whether the given graph...Ch. 10.5 - In Exercises 1-8 determine whether the given graph...Ch. 10.5 - Prob. 3ECh. 10.5 - In Exercises 1-8 determine whether the given graph...Ch. 10.5 - In Exercises 1-8 determine whether the given graph...Ch. 10.5 - In Exercises 1-8 determine whether the given graph...Ch. 10.5 - In Exercises 1-8 determine whether the given graph...Ch. 10.5 - In Exercises 1-8 determine whether the given graph...Ch. 10.5 - Suppose that in addition to the seven bridges of...Ch. 10.5 - Prob. 10ECh. 10.5 - When can the centerlines of the streets in a city...Ch. 10.5 - Devise a procedure, similar to Algorithm 1, for...Ch. 10.5 - In Exercises 13-15 determine whether the picture...Ch. 10.5 - In Exercises 13-15 determine whether the picture...Ch. 10.5 - In Exercises 13-15 determine whether the picture...Ch. 10.5 - Show that a directed multigraph having no isolated...Ch. 10.5 - Show that a directed multigraph having no isolated...Ch. 10.5 - In Exercises 18-23 determine whether the directed...Ch. 10.5 - In Exercises 18-23 determine whether the directed...Ch. 10.5 - In Exercises 18-23 determine whether the directed...Ch. 10.5 - In Exercises 18-23 determine whether the directed...Ch. 10.5 - In Exercises 18-23 determine whether the directed...Ch. 10.5 - In Exercises 18-23 determine whether the directed...Ch. 10.5 - Devise an algorithm for constructing Euler...Ch. 10.5 - Devise an algorithm for constructing Euler paths...Ch. 10.5 - For which values of n do thesegraphs have an...Ch. 10.5 - For whichvalues ofndo the graphs in Exercise 26...Ch. 10.5 - For which values ofmandn.does the complete...Ch. 10.5 - Find the least number of times it is necessary to...Ch. 10.5 - In Exercises 30-36 determine whether the given...Ch. 10.5 - In Exercises 30-36 determine whether the given...Ch. 10.5 - In Exercises 30-36 determine whether the given...Ch. 10.5 - In Exercises 30-36 determine whether the given...Ch. 10.5 - In Exercises 30-36 determine whether the given...Ch. 10.5 - Prob. 35ECh. 10.5 - In Exercises 30-36 determine whether the given...Ch. 10.5 - Does the graph in Exercise 30 have a Hamilton...Ch. 10.5 - Does the graph in Exercise 31 have a Hamilton...Ch. 10.5 - Does the graph in Exercise 32 have a Hamilton...Ch. 10.5 - Does the graph in Exercise 33 have a Hamilton...Ch. 10.5 - Does the graph in Exercise 34 have a Hamilton...Ch. 10.5 - Does the graph in Exercise 35 have a Hamilton...Ch. 10.5 - Does the graph inExercise 36 have a Hamilton path?...Ch. 10.5 - For which values ofn.do the graphs in Exercise 26...Ch. 10.5 - For which values of m andndoes the complete...Ch. 10.5 - Show that thePetersen graph,shown here, does not...Ch. 10.5 - For each of these graphs, determine (i) whether...Ch. 10.5 - Can you find a simple graph with n vertices...Ch. 10.5 - Show that there is a Gray code of order whenever n...Ch. 10.5 - Fleury’s algorithm, published in 1883, constricts...Ch. 10.5 - Express Fleury's algorithm in pseudocode.Ch. 10.5 - Prob. 52ECh. 10.5 - Give a variant of Fleury's algorithm to produce...Ch. 10.5 - A diagnostic message can be sent out over a...Ch. 10.5 - Show that a bipartite graph with an odd number of...Ch. 10.5 - A knightis a chess piece that can move either two...Ch. 10.5 - A knightis a chess piece that can move either two...Ch. 10.5 - a) Show that finding a knights tour on...Ch. 10.5 - Show that there is a knight's tour on...Ch. 10.5 - Show that there is no knight's tour on...Ch. 10.5 - Show that there is no knight's tour on...Ch. 10.5 - Show that the graph representing the 1egal moves...Ch. 10.5 - Show that there is no reentrant knight's tour on...Ch. 10.5 - Show that there is a knight's tour on...Ch. 10.5 - The parts of this exercise outline a proof of...Ch. 10.5 - Show that if u and v are nondjacent vertices in a...Ch. 10.5 - Show that this graph doesnothave a Hamilton...Ch. 10.5 - Prob. 68ECh. 10.6 - For each of these problems about a subway system,...Ch. 10.6 - In Exercises 2-4 find the length of a shortest...Ch. 10.6 - In Exercises 2-4 find the length of a shortest...Ch. 10.6 - In Exercises 2-4 find the length of a shortest...Ch. 10.6 - Find a shortest path betweenaandzin each of the...Ch. 10.6 - Prob. 6ECh. 10.6 - Find shortest paths in the weighted graph in...Ch. 10.6 - Find a shortest path (in mileage) between each of...Ch. 10.6 - Find a combination of flights with the least total...Ch. 10.6 - Find a least expensive combination of flights...Ch. 10.6 - Find a shortest route (in distance) between...Ch. 10.6 - Find a routs with the shortest response time...Ch. 10.6 - Find a least expensive route, in monthly lease...Ch. 10.6 - Explain how to find a path mm the least number of...Ch. 10.6 - Exend Dijkstea's algorithm for finding the length...Ch. 10.6 - Extend Dijkstra's algorithm for finding the length...Ch. 10.6 - The weighted graphs in the figures here show some...Ch. 10.6 - Is a shortest path between two vertices in a...Ch. 10.6 - What are some applications where it is necessary...Ch. 10.6 - What is the length of a longest simple path in the...Ch. 10.6 - Floyd 's algorithm,displayed as Algorithm 2, can...Ch. 10.6 - Prove that Floyd's algorithm determines the...Ch. 10.6 - Give a big-0 estimate of the number of operations...Ch. 10.6 - Show that Dijkstra's algorithm may not work if...Ch. 10.6 - Solve the traveling salesperson problem for this...Ch. 10.6 - Solve the traveling salesperson problem far this...Ch. 10.6 - Find a route with the least total airfare that...Ch. 10.6 - Find a route with the least total airfare that...Ch. 10.6 - Construct a weighted undirected graph such that...Ch. 10.6 - Show that the problem of finding a circuit of...Ch. 10.6 - The longest path problemin a weighted directed...Ch. 10.7 - Can five houses be connected to two utilities...Ch. 10.7 - In Exercises 2-4 draw the given planar graph...Ch. 10.7 - In Exercises 2-4 draw the given planar graph...Ch. 10.7 - In Exercises 2-4 draw the given planar graph...Ch. 10.7 - In Exercises 5-9 determine whether the given graph...Ch. 10.7 - In Exercises 5-9 determine whether the given graph...Ch. 10.7 - In Exercises 5-9 determine whether the given graph...Ch. 10.7 - In Exercises 5-9 determine whether the given graph...Ch. 10.7 - In Exercises 5-9 determine whether the given graph...Ch. 10.7 - Complete the argument inExample 3.Ch. 10.7 - Show thatK5is nonplanar using an argument similar...Ch. 10.7 - Prob. 12ECh. 10.7 - Prob. 13ECh. 10.7 - Prob. 14ECh. 10.7 - ProveCorollary 3.Ch. 10.7 - Prob. 16ECh. 10.7 - Prob. 17ECh. 10.7 - Suppose that a planar graph haskconnected...Ch. 10.7 - Which of these nonplanar graphs have the property...Ch. 10.7 - Prob. 20ECh. 10.7 - In Exercises 20-22 determine whether the given...Ch. 10.7 - Prob. 22ECh. 10.7 - Prob. 23ECh. 10.7 - Prob. 24ECh. 10.7 - Prob. 25ECh. 10.7 - Prob. 26ECh. 10.7 - Prob. 27ECh. 10.7 - Prob. 28ECh. 10.7 - Prob. 29ECh. 10.7 - Show thatK3,3has 2 as its thickness.Ch. 10.7 - Find the thickness of the graphs in Exercise 27.Ch. 10.7 - Show that ifGis a connected simple graph...Ch. 10.7 - Prob. 33ECh. 10.7 - Prob. 34ECh. 10.7 - Prob. 35ECh. 10.7 - Prob. 36ECh. 10.7 - Draw K3,3on the surface of a torus so that no...Ch. 10.8 - Prob. 1ECh. 10.8 - Prob. 2ECh. 10.8 - Prob. 3ECh. 10.8 - Prob. 4ECh. 10.8 - Prob. 5ECh. 10.8 - Prob. 6ECh. 10.8 - Prob. 7ECh. 10.8 - Prob. 8ECh. 10.8 - Prob. 9ECh. 10.8 - Prob. 10ECh. 10.8 - Prob. 11ECh. 10.8 - Prob. 12ECh. 10.8 - Prob. 13ECh. 10.8 - What is the least number of colors needed to color...Ch. 10.8 - Prob. 15ECh. 10.8 - Show that a simple graph that has a circuit with...Ch. 10.8 - Schedule the final exams for Math 115, Math 116,...Ch. 10.8 - How many different channels are needed for six...Ch. 10.8 - The mathematics department has six committees,...Ch. 10.8 - Prob. 20ECh. 10.8 - Find the edge chromatic number of each of the...Ch. 10.8 - Prob. 22ECh. 10.8 - Find the edge chromatic numbers of a)Cn,wheren3....Ch. 10.8 - Prob. 24ECh. 10.8 - Show that ifGis a graph withnvertices, there no...Ch. 10.8 - Find the edge chromatic number ofKnwhen n is a...Ch. 10.8 - Prob. 27ECh. 10.8 - Prob. 28ECh. 10.8 - Construct a coloring of the graph shown using this...Ch. 10.8 - Use pseudocode to describe this coloring...Ch. 10.8 - Show that the coloring produced by this algorithm...Ch. 10.8 - Show thatCnis chromatically 3-critical whenevernis...Ch. 10.8 - Show thatWnis chromatically 4-critical whenever n...Ch. 10.8 - Prob. 34ECh. 10.8 - Prob. 35ECh. 10.8 - Find these values: a)X2(K3) b)X2(K4) c) X2(W4)...Ch. 10.8 - Prob. 37ECh. 10.8 - Prob. 38ECh. 10.8 - Frequencies for mobile radio (or cellular)...Ch. 10.8 - Show that every planar graph G can be colored...Ch. 10.8 - Prob. 41ECh. 10.8 - Show that g(3) = 1 and g(4) = 1 by showing that...Ch. 10.8 - Show that g(5) = 1. That is, show that all...Ch. 10.8 - Show that g(6) = 2by first using Exercises 42 and...Ch. 10.8 - Prob. 45ECh. 10.8 - Solve the art gallery problem by proving theart...Ch. 10 - a) Define a simple graph, a multigraph, a...Ch. 10 - Prob. 2RQCh. 10 - What is the relationship between the sum of the...Ch. 10 - Why must there be an even number of vertices of...Ch. 10 - Prob. 5RQCh. 10 - Describe the following families of graphs....Ch. 10 - Prob. 7RQCh. 10 - Prob. 8RQCh. 10 - a) Describe three different methods that can be...Ch. 10 - a) What does it mean for two simple graphs to be...Ch. 10 - a) What does it mean for a graph to be connected?...Ch. 10 - Prob. 12RQCh. 10 - a) Define an Euler circuit and an Euler path in an...Ch. 10 - Prob. 14RQCh. 10 - Give examples of at least two problems that can be...Ch. 10 - a) Describe Dijkstra's algorithm for finding the...Ch. 10 - a) What does it mean for a graph to be planar? b)...Ch. 10 - a) What is Eider's formula for connected planar...Ch. 10 - Prob. 19RQCh. 10 - a) Define the chromatic number of a graph. b) What...Ch. 10 - Prob. 21RQCh. 10 - Prob. 22RQCh. 10 - Prob. 1SECh. 10 - How many nonisomorphic subgraphs doesK3have?Ch. 10 - Prob. 3SECh. 10 - Prob. 4SECh. 10 - Prob. 5SECh. 10 - Prob. 6SECh. 10 - Prob. 7SECh. 10 - Prob. 8SECh. 10 - LetG= (V, E)be an undirected graph and let...Ch. 10 - Prob. 10SECh. 10 - Prob. 11SECh. 10 - Prob. 12SECh. 10 - Prob. 13SECh. 10 - Prob. 14SECh. 10 - We say that three verticesu, v, andwof a simple...Ch. 10 - Find the clustering coefficient of each of the...Ch. 10 - Prob. 17SECh. 10 - For each of the graphs in Exercise 17, explain...Ch. 10 - Prob. 19SECh. 10 - A cliquein a simple undirected graph is a complete...Ch. 10 - Prob. 21SECh. 10 - Prob. 22SECh. 10 - Prob. 23SECh. 10 - Prob. 24SECh. 10 - Prob. 25SECh. 10 - Prob. 26SECh. 10 - A simple graph can be used to determine the...Ch. 10 - A simple graph can be used to determine the...Ch. 10 - A simple graph can be used to determine the...Ch. 10 - A simple graph can be used to determine the...Ch. 10 - Prob. 31SECh. 10 - A simple graph can be used to determine the...Ch. 10 - Prob. 33SECh. 10 - Prob. 34SECh. 10 - Prob. 35SECh. 10 - Prob. 36SECh. 10 - An orientationof an undirected simple graph is an...Ch. 10 - Prob. 38SECh. 10 - Prob. 39SECh. 10 - A tournament is a simple directed graph such that...Ch. 10 - Prob. 41SECh. 10 - A tournamentis a simple directed graph such that...Ch. 10 - Prob. 43SECh. 10 - Prob. 44SECh. 10 - Prob. 45SECh. 10 - Prob. 46SECh. 10 - A connected graphG = (V, E)withnvertices and m...Ch. 10 - A connected graphG = (V, E)withnvertices and m...Ch. 10 - Prob. 49SECh. 10 - Prob. 50SECh. 10 - Prob. 51SECh. 10 - Thedistancebetween two distinct verticesv1and v2of...Ch. 10 - a) Show that if the diameter of the simple graph G...Ch. 10 - Prob. 54SECh. 10 - Prob. 55SECh. 10 - Devise an algorithm for finding the second...Ch. 10 - Prob. 57SECh. 10 - Prob. 58SECh. 10 - Show that ifGis a simple graph with at least 11...Ch. 10 - Prob. 60SECh. 10 - Prob. 61SECh. 10 - Show that the chromatic number of a graph is less...Ch. 10 - Suppose that to generate a random simple graph...Ch. 10 - For each of these properties, determine whether it...Ch. 10 - Prob. 65SECh. 10 - Prob. 66SECh. 10 - Prob. 1CPCh. 10 - Prob. 2CPCh. 10 - Prob. 3CPCh. 10 - Prob. 4CPCh. 10 - Prob. 5CPCh. 10 - Prob. 6CPCh. 10 - Prob. 7CPCh. 10 - Prob. 8CPCh. 10 - Given, a positive integer n, generate a simple...Ch. 10 - Prob. 10CPCh. 10 - Prob. 11CPCh. 10 - Prob. 12CPCh. 10 - Given the vertex pairs associated to the edges of...Ch. 10 - Given the ordered pairs of vertices associated to...Ch. 10 - Given the list of edges of a simple graph, produce...Ch. 10 - Given the list of edges of a simple graph, produce...Ch. 10 - Given the list of edges and weights of these edges...Ch. 10 - Given the list of edges of an undirected graph,...Ch. 10 - Prob. 19CPCh. 10 - Given the distances between pairs of television...Ch. 10 - Prob. 1CAECh. 10 - Prob. 2CAECh. 10 - Prob. 3CAECh. 10 - Prob. 4CAECh. 10 - Prob. 5CAECh. 10 - Prob. 6CAECh. 10 - Prob. 7CAECh. 10 - Prob. 8CAECh. 10 - 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Prob. 21WPCh. 10 - Describe and compare several different algorithms...Ch. 10 - Explain how graph multicolorings can be used in a...Ch. 10 - Prob. 24WPCh. 10 - Explain how the theory of random graphs can be...
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- Consider the initial value problem mx" cx' + kx F(t), x(0) = 0, x'(0) = 0 modeling the motion of a damped mass-spring system initially at rest and subjected to an applied force F(t), where the unit of force is the Newton (N). Assume that m = 2 80 Newtons per meter, and F(t) = 20 sin(6t) kilograms, c = 8 kilograms per second, k = Newtons. Solve the initial value problem. x(t) = help (formulas) Determine the long-term behavior of the system (steady periodic solution). Is lim x(t) = 0 0047 ? If it is, enter zero. If not, enter a function that approximates x(t) for very large positive values of t. For very large positive values of t, x(t) ≈ x sp(t) = ☐ help (formulas) Book: Section 2.6 of Notes on Diffy Qsarrow_forwardConsider the differential equation y' = - 4xy with initial condition y(0) = 1.9. Recall that Runge-Kutta method has the following formula for computing the next step, where h is the step size: f(xi, Yi) = fx i + (++) k1 = h k2 2 ¯‚ Yi + k₁ h h k3 = fxi 2 `, Yi + k₂· 2 k4 = f(xi+h, yikзh) i+1=i+h k12k22k3 + k4 Yi+1 Yi + h 6 Using Runge-Kutta step size h = 0.4: Estimate y(0.4) ≈ help (numbers) Estimate y(0.8) ≈ help (numbers) Book: Section 1.7 of Notes on Diffy Qsarrow_forwardDetermine which differential equation corresponds to each phase diagram. You should be able to state briefly how you know your choices are correct. х x 4 4 4 4 3 3 3 3 2 2 2 2 dx ? ✰ dt = 1. = x² - 3x 1 1 1 1 ? ◇ 2. dx dt = x(x − 2) - 0 0 0 0 ? ◇ 3. dx dt = x(2 − x)² -1 -1 -1 -1 Q -2 -2 -2 dx ? ◇ 4. ༤་ dt = = 3x - x² -3 -3 -3 -3 x³- 4x = x²|x − 2| ? ◇ 5. ம் dx dt བི་ dx ? ◇ 6. dt ཝེ་ dx ? 7. dt ཝེ་ dx ? ◇ 8. ཝེ་ dt -4 -4 -4 -4 A B 0 D = = 2x = x² * x * * x * K 4 4 4 4 = 4x - x³ 3 3 3 • 3 Book: Section 1.6 of Notes on Diffy Qs dit for this problem 2 2 2 2 1 1 1 1 0 0 0 8 -1 -1 -1 -1 N 心 -2 -2 -3 -3 -3 -4 -4 -4 -4 E FL G Harrow_forward
- Dear expert Chatgpt gives wrong answer Plz don't use chat gptarrow_forwardAn improved method that is similar to Euler's method is what is usually called the Improved Euler's method. It works like this: Consider an equation y' = f(x, y). From (xn, Yn), our approximation to the solution of the differential equation at the n-th stage, we find the next stage by computing the x-step Xn+1 = xn +h, and then k1, the slope at (xn, Yn). The predicted new value of the solution . İs Zn+1 = Yn + h · k₁. Then we find the slope at the predicted new point k₁ = f(xn+1, Zn+1) and get the corrected point by averaging slopes h Yn+1 = = Yn + 1½ ½ (k1 + k₂). Suppose that we use the Improved Euler's method to approximate the solution to the differential equation dy dx = x - 0.5y, y(0.5) = 9. We let xo = 0.5 and yo 9 and pick a step size h = 0.25. Complete the following table: n xn Yn k1 Zn+1 k₂ 0 0.59-48 -3.25 ♡ <+ help (numbers) The exact solution can also be found for the linear equation. Write the answer as a function of x. y(x) = = help (formulas) Thus the actual value of the…arrow_forwardAlready got wrong Chatgpt answer If ur also Chatgpt user leave itarrow_forward
- The graph of the function f(x) is 1,0 (the horizontal axis is x.) Consider the differential equation x' = f(x). List the constant (or equilibrium) solutions to this differential equation in increasing order and indicate whether or not these equalibria are stable, semi-stable (stable from one side, unstable from the other), or unstable. x = help (numbers) x = help (numbers) x = help (numbers) x = help (numbers) Book: Section 1.6 of Notes on Diffy Qsarrow_forward= A 10 kilogram object suspended from the end of a vertically hanging spring stretches the spring 9.8 centimeters. At time t = 0, the resulting mass-spring system is disturbed from its rest state by the force F(t) = 60 cos(8t). The force F(t) is expressed in Newtons and is positive in the downward direction, and time is measured in seconds. Determine the spring constant k. k = Newtons/meter help (numbers) Hint is to use earth gravity of 9.8 meters per second squared, and note that Newton is kg meter per second squared. Formulate the initial value problem for x(t), where x(t) is the displacement of the object from its equilibrium rest state, measured positive in the downward direction. Give your answer in terms of x, x',x",t. Differential equation: | help (equations) Initial conditions: x (0) = and '(0) = help (numbers) Solve the initial value problem for x(t). x(t) = ☐ help (formulas) Plot the solution and determine the maximum displacement from equilibrium made by the object on the…arrow_forwardSuppose f(x) is a continuous function that is zero when x is −1, 3, or 6 and nowhere else. Suppose we tested the function at a few points and found that ƒ(−2) 0, and f(7) < 0. Let x(t) be the solution to x' f(x) and x(0) = 1. Compute: lim x(t) help (numbers) t→∞ Book: Section 1.6 of Notes on Diffy Qsarrow_forward
- Consider the initial value problem У y' = sin(x) + y(-4) = 5 4 Use Euler's Method with five steps to approximate y(-2) to at least two decimal places (but do not round intermediate results). y(-2) ≈ help (numbers) Book: Section 1.7 of Notes on Diffy Qsarrow_forwardConsider the differential equation y' = 5y with initial condition y(0) : The actual solution is y(1) = 207.78 help (numbers) = 1.4. We wish to analyze what happens to the error when estimating y(1) via Euler's method. Start with step size h = 1 (1 step). Compute y(1) Error 8.4 help (numbers) 199.38 help (numbers) Note: Remember that the error is the absolute value! Let us half the step size to h = 0.5 (2 steps). Compute y(1) ≈ 17.15 help (numbers) Error = 190.63 help (numbers) The error went down by the factor: Error Previous error Let us half the step size to h = 0.25 (4 steps). Compute y(1) 35.88046875 help (numbers) Error = 171.90 help (numbers) help (numbers) The error went down by the factor: Error Previous error help (numbers) Euler's method is a first order method so we expect the error to go down by a factor of 0.5 each halving. Of course, that's only very approximate, so the numbers you get above are not exactly 0.5. Book: Section 1.7 of Notes on Diffy Qsarrow_forwardAnswer all the boxes and box the answers. Thank you write it downarrow_forward
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