Fundamentals Of Differential Equations And Boundary Value Problems, Books A La Carte Edition (7th Edition)
7th Edition
ISBN: 9780321977182
Author: Nagle, R. Kent, Saff, Edward B., Snider, Arthur David
Publisher: PEARSON
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Chapter 11.3, Problem 16E
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The systolic blood pressure of individuals is thought to be related to both age and weight. Let the systolic blood pressure, age, and weight be represented by the variables x1, x2, and x3, respectively. Suppose that Minitab was used to generate the following descriptive statistics, correlations, and regression analysis for a random sample of 15 individuals.
Descriptive Statistics
Variable
N
Mean
Median
TrMean
StDev
SE Mean
x 1
15
154.14
154.34
154.14
3.842
0.992000
x 2
15
59.69
60.19
59.69
1.462
0.377487
x 3
15
205.55
204.75
205.55
4.558
1.176871
Variable
Minimum
Maximum
Q1
Q3
x 1
125
178
141.803
167.244
x 2
41
80
47.754
78.415
x 3
126
240
140.395
224.008
Correlations (Pearson)
x 1
x 2
x 2
0.892
x 3
0.839
0.567
Regression Analysis
The regression equation is
x 1 = 0.883 + 1.257x2 + 0.871x3
Predictor
Coef
StDev
T
P
Constant
0.883
0.635
1.39
0.095
x 2
1.257
0.635
1.98
0.036
x 3
0.871
0.419
2.08
0.030
S = 0.428
R-sq = 92.7 %…
According to health professionals, a person’s weight is expected to increase with age. To examine that statement, a nutritionist collected data from 11 random females from different age categories between the ages of 21 and 43. In the following table, x is the age of a person and y is the weight in pounds.
x, age
21
24
27
29
31
33
35
38
40
42
43
y, weight in lb
121.4
122.3
130.3
131.7
133.3
134.6
136.7
138.4
140.3
142.0
145.1
Select the correct graph of the least-squares line on a scatter diagram.
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Chapter 11 Solutions
Fundamentals Of Differential Equations And Boundary Value Problems, Books A La Carte Edition (7th Edition)
Ch. 11.2 - In Problems 1-12, determine the solutions, if any,...Ch. 11.2 - In Problems 1-12, determine the solutions, if any,...Ch. 11.2 - Prob. 3ECh. 11.2 - In Problems 1-12, determine the solutions, if any,...Ch. 11.2 - In Problems 1-12, determine the solutions, if any,...Ch. 11.2 - In Problems 1-12, determine the solutions, if any,...Ch. 11.2 - Prob. 7ECh. 11.2 - In Problems 1-12, determine the solutions, if any,...Ch. 11.2 - Prob. 9ECh. 11.2 - In Problems 1-12, determine the solutions, if any,...
Ch. 11.2 - Prob. 11ECh. 11.2 - In Problems 1-12, determine the solutions, if any,...Ch. 11.2 - Prob. 13ECh. 11.2 - In Problems 13-20, find all the real eigenvalues...Ch. 11.2 - In Problems 13-20, find all the real eigenvalues...Ch. 11.2 - Prob. 16ECh. 11.2 - In Problems 13-20, find all the real eigenvalues...Ch. 11.2 - In Problems 13-20, find all the real eigenvalues...Ch. 11.2 - In Problems 13-20, find all the real eigenvalues...Ch. 11.2 - In Problems 13-20, find all the real eigenvalues...Ch. 11.2 - In Problems 23-26, find all the real values of ...Ch. 11.2 - In Problems 23-26, find all the real values of ...Ch. 11.2 - In Problems 23-26, find all the real values of ...Ch. 11.2 - In Problems 23-26, find all the real values of ...Ch. 11.3 - In Problem 1-6, convert the given equation into...Ch. 11.3 - In Problem 1-6, convert the given equation into...Ch. 11.3 - Prob. 3ECh. 11.3 - In Problem 1-6, convert the given equation into...Ch. 11.3 - Prob. 5ECh. 11.3 - In Problems 1-6, convert the given equation into...Ch. 11.3 - Prob. 7ECh. 11.3 - In problem 7-11, determine whether the given...Ch. 11.3 - In problem 7-11, determine whether the given...Ch. 11.3 - Prob. 10ECh. 11.3 - Prob. 11ECh. 11.3 - Prob. 12ECh. 11.3 - Let be an eigenvalue and a corresponding...Ch. 11.3 - Prob. 15ECh. 11.3 - Show that if =u+iv is an eigenfunction...Ch. 11.3 - In Problems 17 -24, a determine the normalized...Ch. 11.3 - In Problems 17 -24, a determine the normalized...Ch. 11.3 - In Problems 17 -24, a determine the normalized...Ch. 11.3 - In Problems 17 -24, a determine the normalized...Ch. 11.3 - In Problems 17 -24, a determine the normalized...Ch. 11.3 - In Problems 17 -24, a determine the normalized...Ch. 11.3 - Prob. 25ECh. 11.3 - Prove that the linear differential operator...Ch. 11.4 - Prob. 1ECh. 11.4 - Prob. 2ECh. 11.4 - Prob. 3ECh. 11.4 - Prob. 4ECh. 11.4 - Prob. 5ECh. 11.4 - Prob. 6ECh. 11.4 - In Problems 7-10, find theadjointoperator and its...Ch. 11.4 - Prob. 8ECh. 11.4 - Prob. 9ECh. 11.4 - In Problems 7-10, find the adjoint operator and...Ch. 11.4 - Prob. 11ECh. 11.4 - Prob. 12ECh. 11.4 - Prob. 13ECh. 11.4 - Prob. 14ECh. 11.4 - Prob. 15ECh. 11.4 - Prob. 16ECh. 11.4 - Prob. 17ECh. 11.4 - Prob. 18ECh. 11.4 - Prob. 19ECh. 11.4 - Prob. 20ECh. 11.4 - Prob. 21ECh. 11.4 - Prob. 22ECh. 11.4 - Prob. 23ECh. 11.4 - Prob. 24ECh. 11.4 - Prob. 25ECh. 11.4 - Prob. 26ECh. 11.4 - Prob. 27ECh. 11.4 - Prob. 28ECh. 11.4 - Prob. 29ECh. 11.5 - Prob. 1ECh. 11.5 - In Problems 1-8, find a formal eigenfunction...Ch. 11.5 - Prob. 3ECh. 11.5 - In Problems 1-8, find a formal eigenfunction...Ch. 11.5 - Prob. 5ECh. 11.5 - Prob. 6ECh. 11.5 - Prob. 7ECh. 11.5 - Prob. 8ECh. 11.5 - In Problem 9-14, find a formal eigenfunction...Ch. 11.5 - In Problem 9-14, find a formal eigenfunction...Ch. 11.5 - Prob. 11ECh. 11.5 - Prob. 12ECh. 11.5 - In Problem 9-14, find a formal eigenfunction...Ch. 11.5 - Derive the solution to Problem 12 given in...Ch. 11.6 - Prob. 1ECh. 11.6 - Prob. 2ECh. 11.6 - Prob. 3ECh. 11.6 - Prob. 4ECh. 11.6 - Prob. 5ECh. 11.6 - In Problems 1-10, find the Greens function G(x,s)...Ch. 11.6 - Prob. 7ECh. 11.6 - Prob. 8ECh. 11.6 - Prob. 9ECh. 11.6 - Prob. 10ECh. 11.6 - In problems 11 -20, use Greens functions to solve...Ch. 11.6 - In problems 11 -20, use Greens functions to solve...Ch. 11.6 - In Problems 11-20, use Greens functions to solve...Ch. 11.6 - In Problems 11-20, use Greens functions to solve...Ch. 11.6 - In Problems 11-20, use Greens functions to solve...Ch. 11.6 - In Problems 11-20, use Greens functions to solve...Ch. 11.6 - In Problems 11-20, use Greens functions to solve...Ch. 11.6 - Derive a formula using a Greens function for the...Ch. 11.6 - Prob. 22ECh. 11.6 - Prob. 23ECh. 11.6 - Prob. 24ECh. 11.6 - Prob. 25ECh. 11.6 - Prob. 26ECh. 11.6 - Prob. 31ECh. 11.7 - Prob. 2ECh. 11.7 - Prob. 3ECh. 11.7 - Prob. 4ECh. 11.7 - Prob. 5ECh. 11.7 - Prob. 6ECh. 11.7 - Prob. 8ECh. 11.7 - Prob. 9ECh. 11.7 - Prob. 10ECh. 11.7 - Prob. 11ECh. 11.7 - Prob. 12ECh. 11.7 - Show that the only eigenfunctions of 23-24...Ch. 11.7 - a. Use formula 25 to show that Pn(x) is an odd...Ch. 11.7 - Prob. 16ECh. 11.8 - Prob. 1ECh. 11.8 - Prob. 2ECh. 11.8 - Prob. 3ECh. 11.8 - Can the function (x)=x4sin(1/x) be a solution on...Ch. 11.8 - Prob. 6ECh. 11.8 - Prob. 7ECh. 11.8 - Prob. 8ECh. 11.8 - Prob. 9ECh. 11.8 - Prob. 10ECh. 11.8 - Prob. 11ECh. 11.8 - In equation (10), assume Q(x)m2 on [a,b]. Prove...Ch. 11.8 - Prob. 13ECh. 11.8 - Show that if Q(x)m20 on [a,), then every solution...Ch. 11.RP - Find all the real eigen-values and eigen-functions...Ch. 11.RP - Prob. 2RPCh. 11.RP - a. Determine the eigenfunctions, which are...Ch. 11.RP - Prob. 4RPCh. 11.RP - Use the Fredholm alternative to determine...Ch. 11.RP - Find the formal eigenfunction expansion for the...Ch. 11.RP - Find the Greens function G(x,s) and use it to...Ch. 11.RP - Find a formal eigenfunction expansion for the...Ch. 11.RP - Let (x) be a nontrivial solution to...Ch. 11.RP - Use Corollary 5 in Section 11.8 to estimate the...
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