Differential Equations: An Introduction to Modern Methods and Applications
3rd Edition
ISBN: 9781118531778
Author: James R. Brannan, William E. Boyce
Publisher: WILEY
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Chapter 3.3, Problem 9P
General Solutions of Systems. In each of problems 1 through 12, find the general solution of the given system of equations. Also draw a direction field and a phase portrait. Describe the behaviour of the solutions as
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In Gallup's Annual Consumption Habits Poll, telephone interviews were conducted for a
random sample of 1014 adults aged 18 and over. One of the questions was, "How many
cups of coffee, if any, do you drink on an average day?" The following table shows the
results obtained (Gallup website, August 6, 2012).
Number of Cups
per Day
0
1
2
3
4 or more
Number of
Responses
365
264
193
91
101
Define a random variable x = number of cups of coffee consumed on an average day. Let
x=4 represent four or more cups.
a. Develop a probability distribution for x.
b. Compute the expected value of x.
c. Compute the variance of x.
d. Suppose we are only interested in adults who drink at least one cup of coffee on an
average day. For this group, let y = the number of cups of coffee consumed on an
average day. Compute the expected value of y and compare it to the expected value of x.
Ten major college football bowl games were played in January 2010, with the University
of Alabama beating the University of Texas 37 to 21 to become the national champion
of college football. The results of the 10 bowl games follow (USA Today, January 8, 2010).
Bowl Game
Score
Outback
Gator
Auburn 38 Northwestern 35
Florida State 33 West Virginia 21
Capital One
Penn State 19 LSU 17
Rose
Ohio State 26 Oregon 17
Florida 51 Cincinnati 24
Sugar
Cotton
Alamo
Fiesta
Mississippi State 21 Oklahoma State 7
Texas Tech 41 Michigan State 31
Boise State 17 TCU 10
Orange
Iowa 24 Georgia Tech 14
Championship
Alabama 37 Texas 21
Predicted
Point Margin
Actual
Point Margin
5
3
1
12
3
-2
14
3
9
-4
-3
4
229740706
14
10
10
16
The predicted winning point margin was based on Las Vegas betting odds approximately
one week before the bowl games were played. For example, Auburn was predicted to beat
Northwestern in the Outback Bowl by five points. The actual winning point margin for Au-
burn was three points. A…
Chapter 3 Solutions
Differential Equations: An Introduction to Modern Methods and Applications
Ch. 3.1 - Solving Linear Systems. In each of Problems 1...Ch. 3.1 - Solving Linear Systems. In each of Problems 1...Ch. 3.1 -
Solving Linear Systems. In each of Problems ...Ch. 3.1 - Solving Linear Systems. In each of Problems 1...Ch. 3.1 -
Solving Linear Systems. In each of Problems ...Ch. 3.1 - Solving Linear Systems. In each of Problems 1...Ch. 3.1 -
Solving Linear Systems. In each of Problems ...Ch. 3.1 -
Solving Linear Systems. In each of Problems ...Ch. 3.1 -
Solving Linear Systems. In each of Problems ...Ch. 3.1 - Solving Linear Systems. In each of Problems 1...
Ch. 3.1 - Solving Linear Systems. In each of Problems 1...Ch. 3.1 -
Solving Linear Systems. In each of Problems ...Ch. 3.1 -
Eigenvalues and Eigenvectors. In each of Problems...Ch. 3.1 -
Eigenvalues and Eigenvectors. In each of Problems...Ch. 3.1 -
Eigenvalues and Eigenvectors. In each of Problems...Ch. 3.1 - Eigenvalues and Eigenvectors. In each of Problems...Ch. 3.1 -
Eigenvalues and Eigenvectors. In each of Problems...Ch. 3.1 -
Eigenvalues and Eigenvectors. In each of Problems...Ch. 3.1 -
Eigenvalues and Eigenvectors. In each of Problems...Ch. 3.1 -
Eigenvalues and Eigenvectors. In each of Problems...Ch. 3.1 -
Eigenvalues and Eigenvectors. In each of Problems...Ch. 3.1 - Eigenvalues and Eigenvectors. In each of Problems ...Ch. 3.1 - Eigenvalues and Eigenvectors. In each of Problems...Ch. 3.1 - Eigenvalues and Eigenvectors. In each of Problems ...Ch. 3.1 - Eigenvalues and Eigenvectors. In each of Problems ...Ch. 3.1 - Eigenvalues and Eigenvectors. In each of Problems ...Ch. 3.1 - Eigenvalues and Eigenvectors. In each of Problems...Ch. 3.1 - Eigenvalues and Eigenvectors. In each of Problems ...Ch. 3.1 - Eigenvalues and Eigenvectors. In each of Problems...Ch. 3.1 - Eigenvalues and Eigenvectors. In each of Problems ...Ch. 3.1 - Eigenvalues and Eigenvectors. In each of Problems ...Ch. 3.1 - Eigenvalues and Eigenvectors. In each of Problems ...Ch. 3.1 -
In each of Problems through :
Find the...Ch. 3.1 -
In each of Problems through :
Find the...Ch. 3.1 - In each of Problems 33 through 36: Find the...Ch. 3.1 -
In each of Problems through :
Find the...Ch. 3.1 -
If , derive the result in Eq. for .
…...Ch. 3.1 - Show that =0 is an eigenvalue of the matrix A if...Ch. 3.2 - Writing Systems in Matrix Form. In each of...Ch. 3.2 - Writing Systems in Matrix Form. In each of...Ch. 3.2 - Writing Systems in Matrix Form. In each of...Ch. 3.2 - Writing Systems in Matrix Form. In each of...Ch. 3.2 - Writing Systems in Matrix Form. In each of...Ch. 3.2 - Writing Systems in Matrix Form. In each of...Ch. 3.2 - Writing Systems in Matrix Form. In each of...Ch. 3.2 - Writing Systems in Matrix Form. In each of...Ch. 3.2 - Show that the functions and are solutions of...Ch. 3.2 - (a) Show that the functions x(t)=et(2cos2tsin2t)...Ch. 3.2 - Show that
is solution of the...Ch. 3.2 - (a) Show that x=et(2t1t1)+(6t+22t1) issolution of...Ch. 3.2 - Find the equilibrium solution, or critical point,...Ch. 3.2 - Prob. 14PCh. 3.2 - In each of Problems through :
Find the...Ch. 3.2 - In each of Problems through :
Find the...Ch. 3.2 - In each of Problems 15 through 20: (a) Find the...Ch. 3.2 - In each of Problems 15 through 20: (a) Find the...Ch. 3.2 - In each of Problems 15 through 20: (a) Find the...Ch. 3.2 - In each of Problems through :
Find the...Ch. 3.2 - Second Order Differential Equations.
In Problems...Ch. 3.2 - Second Order Differential Equations.
In Problems...Ch. 3.2 - Second Order Differential Equations. In Problems...Ch. 3.2 - Second Order Differential Equations.
In Problems...Ch. 3.2 - In each of Problems 25 and 26, transform the given...Ch. 3.2 - In each of Problems 25 and 26, transform the given...Ch. 3.2 - Applications. Electric Circuits. The theory of...Ch. 3.2 - Applications. Electric Circuits. The theory of...Ch. 3.2 - Applications.
Electric Circuits. The theory of...Ch. 3.2 - Mixing Problems.
Each of the tank shown in...Ch. 3.2 - Consider two interconnected tanks similar to those...Ch. 3.3 - General Solutions of Systems. In each of problems...Ch. 3.3 - General Solutions of Systems. In each of problems...Ch. 3.3 - General Solutions of Systems. In each of problems...Ch. 3.3 - General Solutions of Systems. In each of problems...Ch. 3.3 - General Solutions of Systems. In each of problems...Ch. 3.3 - General Solutions of Systems. In each of problems...Ch. 3.3 - General Solutions of Systems. In each of problems...Ch. 3.3 - General Solutions of Systems. In each of problems...Ch. 3.3 - General Solutions of Systems. In each of problems...Ch. 3.3 - General Solutions of Systems. In each of problems...Ch. 3.3 - General Solutions of Systems. In each of problems...Ch. 3.3 - General Solutions of Systems. In each of problems...Ch. 3.3 - In each of problems 13 through 16, solve the given...Ch. 3.3 - In each of problems 13 through 16, solve the given...Ch. 3.3 - In each of problems 13 through 16, solve the given...Ch. 3.3 - In each of problems 13 through 16, solve the given...Ch. 3.3 - Phase Portraits and Component Plots. In each of...Ch. 3.3 - Phase Portraits and Component Plots. In each of...Ch. 3.3 - Phase Portraits and Component Plots. In each of...Ch. 3.3 - Phase Portraits and Component Plots. In each of...Ch. 3.3 - Phase Portraits and Component Plots. In each of...Ch. 3.3 - Phase Portraits and Component Plots. In each of...Ch. 3.3 - Phase Portraits and Component Plots. In each of...Ch. 3.3 - Phase Portraits and Component Plots. In each of...Ch. 3.3 - Second order Equations. For Problems through...Ch. 3.3 - Second order Equations. For Problems through...Ch. 3.3 - Second order Equations. For Problems through...Ch. 3.3 - Second order Equations. For Problems through...Ch. 3.3 - Second order Equations. For Problems through...Ch. 3.3 - Second order Equations. For Problems 25 through...Ch. 3.3 - Obtaining exact, or approximate, expressions for...Ch. 3.3 - Electric Circuits. Problem 32 and 33 are concerned...Ch. 3.3 - Electric Circuits. Problem and are concerned...Ch. 3.3 - Dependence on a Parameter. Consider the system...Ch. 3.4 - General Solutions of Systems. In each of Problems...Ch. 3.4 - General Solutions of Systems. In each of Problems ...Ch. 3.4 - General Solutions of Systems. In each of Problems...Ch. 3.4 - General Solutions of Systems. In each of Problems ...Ch. 3.4 - General Solutions of Systems. In each of Problems...Ch. 3.4 - General Solutions of Systems. In each of Problems ...Ch. 3.4 - In each of Problems through, find the solution of...Ch. 3.4 - In each of Problems through, find the solution of...Ch. 3.4 - In each of Problems 7 through 10, find the...Ch. 3.4 - In each of Problems through, find the solution of...Ch. 3.4 - Phase Portraits and component Plots. In each of...Ch. 3.4 - Phase Portraits and component Plots. In each of...Ch. 3.4 - Dependence on a Parameter. In each of Problems ...Ch. 3.4 - Dependence on a Parameter. In each of Problems ...Ch. 3.4 - Dependence on a Parameter. In each of Problems ...Ch. 3.4 - Dependence on a Parameter. In each of Problems ...Ch. 3.4 - Dependence on a Parameter. In each of Problems ...Ch. 3.4 - Dependence on a Parameter. In each of Problems 13...Ch. 3.4 - Dependence on a Parameter. In each of Problems 13...Ch. 3.4 - Dependence on a Parameter. In each of Problems 13...Ch. 3.4 - Applications.
Consider the electric circuit shown...Ch. 3.4 - Applications.
The electric circuit shown in...Ch. 3.4 - Applications.
In this problem, we indicate how to...Ch. 3.5 - General Solution and Phase Portraits. In each of...Ch. 3.5 - General Solutions and Phase Portraits. In each of...Ch. 3.5 - General Solutions and Phase Portraits. In each of...Ch. 3.5 - General Solutions and Phase Portraits. In each of...Ch. 3.5 - General Solutions and Phase Portraits. In each of...Ch. 3.5 - General Solutions and Phase Portraits. In each of...Ch. 3.5 - In each of Problems 7 through , find the solution...Ch. 3.5 - In each of Problems 7through 12, find the solution...Ch. 3.5 - In each of Problems 7 through , find the solution...Ch. 3.5 - In each of Problems 7 through , find the solution...Ch. 3.5 - In each of Problems 7 through , find the solution...Ch. 3.5 - In each of Problems 7 through , find the solution...Ch. 3.5 - Consider again the electric circuit in Problem 22...Ch. 3.5 - Trace Determinant Plane. Show that the solution of...Ch. 3.5 - Consider the linear system , where and are real...Ch. 3.5 - Continuing Problem 15, Show that the critical...Ch. 3.6 - For each of the systems in Problem through :
Find...Ch. 3.6 - For each of the systems in Problem through :
Find...Ch. 3.6 - For each of the systems in Problem 1 through 6: a)...Ch. 3.6 - For each of the systems in Problem through :
Find...Ch. 3.6 - For each of the systems in Problem through :
Find...Ch. 3.6 - For each of the systems in Problem 1 through 6: a)...Ch. 3.6 - For each of the systems in Problem 7 through 12:...Ch. 3.6 - For each of the systems in Problem through :
Find...Ch. 3.6 - For each of the systems in Problem through :
Find...Ch. 3.6 - For each of the systems in Problem through :
Find...Ch. 3.6 - For each of the systems in Problem through :
Find...Ch. 3.6 - For each of the systems in Problem through :
Find...Ch. 3.6 - For each of the systems in Problem through :
Find...Ch. 3.6 - For each of the systems in Problem 13 through 20:...Ch. 3.6 - For each of the systems in Problem through :
Find...Ch. 3.6 - For each of the systems in Problem 13 through 20:...Ch. 3.6 - For each of the systems in Problem through :
Find...Ch. 3.6 - For each of the systems in Problem through :
Find...Ch. 3.6 - For each of the systems in Problem through :
Find...Ch. 3.6 - For each of the systems in Problem 13 through 20:...Ch. 3.6 -
Consider the system in Example . Draw a component...Ch. 3.6 - In this problem we indicate how to find the...Ch. 3.6 - Prob. 23PCh. 3.6 - An asymptotically stable limit cycle is a closed...Ch. 3.6 - A model for the population, x and y of two...Ch. 3.P1 -
Assume that all the rate constants in , are...Ch. 3.P1 - Estimating Eigenvalues and Eigenvectors of from...Ch. 3.P1 - Computing the Entries of from Its Eigenvalues and...Ch. 3.P1 - Given estimates Kij of the entries of K and...Ch. 3.P1 - Table 3.P.1 lists drug concentration measurements...Ch. 3.P2 - If represents the amount of drug (milligrams) in...Ch. 3.P2 - Prob. 2PCh. 3.P2 - Assuming that and , use the parameter values...Ch. 3.P2 - If a dosage is missed, explain through the...Ch. 3.P2 - Suppose the drug can be packaged in a...
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