Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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A movie studio wishes to determine the relationship between the revenue generated from the streaming of comedies and the revenue generated from the
theatrical release of such movies. The studio has the following bivariate data from a sample of fifteen comedies released over the past five years. These data
give the revenue x from theatrical release (in millions of dollars) and the revenue y from streaming (in millions of dollars) for each of the fifteen movies. The
data are displayed in the Figure 1 scatter plot.
Theater
revenue, x
Streaming
revenue, y
(in millions of (in millions of
dollars)
dollars)
13.2
10.3
62.6
10.4
20.8
5.1
36.7
13.3
44.6
7.2
65.9
10.3
49.4
15.7
31.5
4.5
14.6
2.5
26.0
8.8
28.1
11.5
26.1
7.7
28.2
2.8
60.7
16.4
6.7
1.9
Streaming
revenue
(in millions of dollars)
18+
16+
14
12+
xx
10+
8+
6+
2-
0
10
20 30 40
50
60
70
Theater revenue
(in millions of dollars)
Figure 1
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The least-squares regression line for these data has a slope…
help on this, results given
a) Suppose that we are carrying out the 1-phase simplex algorithm on a linear program in
standard inequality form (with 3 variables and 4 constraints) and suppose that we have
reached a point where we have obtained the following tableau. Apply one more pivot
operation, indicating the highlighted row and column and the row operations you carry
out. What can you conclude from your updated tableau?
x1
x2 x3
81 82
83
84
81
-2 0
1 1 0
0
0
3
82
3 0
-2 0
1
2
0
6
12
1
1
-3
0
0
1
0
2
84
-3 0
2
0
0 -1
1
4
-2 -2 0
11
0
0-4
0
-8
Chapter 7 Solutions
Advanced Engineering Mathematics
Ch. 7.1 - Equality. Give reasons why the five matrices in...Ch. 7.1 - Double subscript notation. If you write the matrix...Ch. 7.1 - Sizes. What sizes do the matrices in Examples 1,...Ch. 7.1 - Main diagonal. What is the main diagonal of A in...Ch. 7.1 - Scalar multiplication. If A in Example 2 shows the...Ch. 7.1 - If a 12 × 12 matrix A shows the distances between...Ch. 7.1 - Addition of vectors. Can you add: A row and a...Ch. 7.1 - Let
Find the following expressions, indicating...Ch. 7.1 - Let
Find the following expressions, indicating...Ch. 7.1 - Let
Find the following expressions, indicating...
Ch. 7.1 - Let
Find the following expressions, indicating...Ch. 7.1 - Let
Find the following expressions, indicating...Ch. 7.1 - Let
Find the following expressions, indicating...Ch. 7.1 - Let
Find the following expressions, indicating...Ch. 7.1 - Let
Find the following expressions, indicating...Ch. 7.1 - Let
Find the following expressions, indicating...Ch. 7.1 - Let
Find the following expressions, indicating...Ch. 7.1 - Prob. 18PCh. 7.1 - Prob. 19PCh. 7.1 - TEAM PROJECT. Matrices for Networks. Matrices have...Ch. 7.2 - Multiplication. Why is multiplication of matrices...Ch. 7.2 - Square matrix. What form does a 3 × 3 matrix have...Ch. 7.2 - Product of vectors. Can every 3 × 3 matrix be...Ch. 7.2 - Skew-symmetric matrix. How many different entries...Ch. 7.2 - Same questions as in Prob. 4 for symmetric...Ch. 7.2 - Triangular matrix. If U1, U2 are upper triangular...Ch. 7.2 - Idempotent matrix, defined by A2 = A. Can you find...Ch. 7.2 - Nilpotent matrix, defined by Bm = 0 for some m....Ch. 7.2 - Transposition. Can you prove (10a)–(10c) for 3 × 3...Ch. 7.2 - Transposition. (a) Illustrate (10d) by simple...Ch. 7.2 - Let
Showing all intermediate results, calculate...Ch. 7.2 - Let
Showing all intermediate results, calculate...Ch. 7.2 - Let
Showing all intermediate results, calculate...Ch. 7.2 - Let
Showing all intermediate results, calculate...Ch. 7.2 - Let
Showing all intermediate results, calculate...Ch. 7.2 - Let
Showing all intermediate results, calculate...Ch. 7.2 - Let
Showing all intermediate results, calculate...Ch. 7.2 - Let
Showing all intermediate results, calculate...Ch. 7.2 - Let
Showing all intermediate results, calculate...Ch. 7.2 - Let
Showing all intermediate results, calculate...Ch. 7.2 - Prob. 21PCh. 7.2 - Product. Write AB in Prob. 11 in terms of row and...Ch. 7.2 - Product. Calculate AB in Prob. 11 columnwise. See...Ch. 7.2 - Commutativity. Find all 2 × 2 matrices A = [ajk]...Ch. 7.2 - TEAM PROJECT. Symmetric and Skew-Symmetric...Ch. 7.2 - Production. In a production process, let N mean...Ch. 7.2 - Concert subscription. In a community of 100,000...Ch. 7.2 - Profit vector. Two factory outlets F1 and F2 in...Ch. 7.2 - TEAM PROJECT. Special Linear Transformations....Ch. 7.3 - Prob. 1PCh. 7.3 - Solve the linear system given explicitly or by its...Ch. 7.3 - Solve the linear system given explicitly or by its...Ch. 7.3 - Solve the linear system given explicitly or by its...Ch. 7.3 - Prob. 5PCh. 7.3 - Solve the linear system given explicitly or by its...Ch. 7.3 - Solve the linear system given explicitly or by its...Ch. 7.3 - Solve the linear system given explicitly or by its...Ch. 7.3 - Solve the linear system given explicitly or by its...Ch. 7.3 - Prob. 10PCh. 7.3 - Prob. 11PCh. 7.3 - Prob. 12PCh. 7.3 - Prob. 13PCh. 7.3 - Prob. 14PCh. 7.3 - Prob. 15PCh. 7.3 - Prob. 17PCh. 7.3 - Prob. 18PCh. 7.3 - Prob. 19PCh. 7.3 - Prob. 20PCh. 7.3 - Prob. 21PCh. 7.3 - Prob. 22PCh. 7.3 - Prob. 23PCh. 7.3 - Prob. 24PCh. 7.4 - Find the rank. Find a basis for the row space....Ch. 7.4 - Find the rank. Find a basis for the row space....Ch. 7.4 - Find the rank. Find a basis for the row space....Ch. 7.4 - Find the rank. Find a basis for the row space....Ch. 7.4 - Prob. 5PCh. 7.4 - Find the rank. Find a basis for the row space....Ch. 7.4 - Find the rank. Find a basis for the row space....Ch. 7.4 - Prob. 8PCh. 7.4 - Prob. 9PCh. 7.4 - Prob. 10PCh. 7.4 - Show the following:
rank BTAT = rank AB. (Note the...Ch. 7.4 - Show the following:
rank A = rank B does not imply...Ch. 7.4 - Prob. 14PCh. 7.4 - Prob. 15PCh. 7.4 - Prob. 16PCh. 7.4 - Prob. 17PCh. 7.4 - Prob. 18PCh. 7.4 - Prob. 19PCh. 7.4 - Prob. 20PCh. 7.4 - Prob. 21PCh. 7.4 - Prob. 22PCh. 7.4 - Prob. 23PCh. 7.4 - Prob. 24PCh. 7.4 - Prob. 25PCh. 7.4 - Prob. 26PCh. 7.4 - Prob. 27PCh. 7.4 - Prob. 28PCh. 7.4 - Prob. 29PCh. 7.4 - Prob. 30PCh. 7.4 - Prob. 31PCh. 7.4 - Prob. 32PCh. 7.4 - Prob. 33PCh. 7.4 - Prob. 34PCh. 7.4 - Prob. 35PCh. 7.7 - Prob. 1PCh. 7.7 - Prob. 2PCh. 7.7 - Prob. 3PCh. 7.7 - Prob. 4PCh. 7.7 - Prob. 5PCh. 7.7 - Prob. 6PCh. 7.7 - Showing the details, evaluate:
Ch. 7.7 - Showing the details, evaluate:
Ch. 7.7 - Showing the details, evaluate:
Ch. 7.7 - Showing the details, evaluate:
Ch. 7.7 - Showing the details, evaluate:
Ch. 7.7 - Prob. 12PCh. 7.7 - Prob. 13PCh. 7.7 - Prob. 14PCh. 7.7 - Prob. 15PCh. 7.7 - Prob. 17PCh. 7.7 - Prob. 18PCh. 7.7 - Prob. 19PCh. 7.7 - Prob. 21PCh. 7.7 - Prob. 22PCh. 7.7 - Prob. 23PCh. 7.7 - Prob. 24PCh. 7.7 - Prob. 25PCh. 7.8 - Prob. 1PCh. 7.8 - Prob. 2PCh. 7.8 - Prob. 3PCh. 7.8 - Prob. 4PCh. 7.8 - Prob. 5PCh. 7.8 - Prob. 6PCh. 7.8 - Prob. 7PCh. 7.8 - Prob. 8PCh. 7.8 - Prob. 9PCh. 7.8 - Prob. 10PCh. 7.8 - Prob. 11PCh. 7.8 - Prob. 12PCh. 7.8 - Prob. 13PCh. 7.8 - Prob. 14PCh. 7.8 - Prob. 15PCh. 7.8 - Prob. 16PCh. 7.8 - Prob. 17PCh. 7.8 - Prob. 18PCh. 7.8 - Prob. 19PCh. 7.8 - Prob. 20PCh. 7.9 - Prob. 1PCh. 7.9 - Prob. 2PCh. 7.9 - Prob. 3PCh. 7.9 - Prob. 4PCh. 7.9 - Prob. 5PCh. 7.9 - Prob. 6PCh. 7.9 - Prob. 7PCh. 7.9 - Prob. 8PCh. 7.9 - Prob. 9PCh. 7.9 - Prob. 10PCh. 7.9 - Prob. 11PCh. 7.9 - Prob. 12PCh. 7.9 - Prob. 13PCh. 7.9 - Prob. 14PCh. 7.9 - Prob. 15PCh. 7.9 - Prob. 16PCh. 7.9 - Prob. 17PCh. 7.9 - Prob. 18PCh. 7.9 - Prob. 19PCh. 7.9 - Prob. 20PCh. 7.9 - Prob. 21PCh. 7.9 - Prob. 22PCh. 7.9 - Prob. 23PCh. 7.9 - Prob. 24PCh. 7.9 - Prob. 25PCh. 7 - Prob. 1RQCh. 7 - Prob. 2RQCh. 7 - Prob. 3RQCh. 7 - Prob. 4RQCh. 7 - Prob. 5RQCh. 7 - Prob. 6RQCh. 7 - Prob. 7RQCh. 7 - Prob. 8RQCh. 7 - Prob. 9RQCh. 7 - Prob. 10RQCh. 7 - Prob. 11RQCh. 7 - Prob. 12RQCh. 7 - Prob. 13RQCh. 7 - Prob. 14RQCh. 7 - Prob. 15RQCh. 7 - Prob. 16RQCh. 7 - Prob. 17RQCh. 7 - Prob. 18RQCh. 7 - Prob. 19RQCh. 7 - Prob. 20RQCh. 7 - Prob. 21RQCh. 7 - Prob. 22RQCh. 7 - Prob. 23RQCh. 7 - Prob. 24RQCh. 7 - Prob. 25RQCh. 7 - Prob. 26RQCh. 7 - Prob. 27RQCh. 7 - Prob. 28RQCh. 7 - Prob. 29RQCh. 7 - Prob. 30RQCh. 7 - Prob. 31RQCh. 7 - Prob. 32RQCh. 7 - Prob. 33RQCh. 7 - Prob. 34RQCh. 7 - Prob. 35RQ
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- b) Solve the following linear program using the 2-phase simplex algorithm. You should give the initial tableau, and each further tableau produced during the execution of the algorithm. If the program has an optimal solution, give this solution and state its objective value. If it does not have an optimal solution, say why. maximize ₁ - 2x2+x34x4 subject to 2x1+x22x3x41, 5x1 + x2-x3-×4 ≤ −1, 2x1+x2-x3-34 2, 1, 2, 3, 40.arrow_forward9. An elementary single period market model contains a risk-free asset with interest rate r = 5% and a risky asset S which has price 30 at time t = 0 and will have either price 10 or 60 at time t = 1. Find a replicating strategy for a contingent claim with payoff h(S₁) = max(20 - S₁, 0) + max(S₁ — 50, 0). Total [8 Marks]arrow_forward8. An elementary single period market model has a risky asset with price So = 20 at the beginning and a money market account with interest rate r = 0.04 compounded only once at the end of the investment period. = = In market model A, S₁ 10 with 15% probability and S₁ 21 with 85% probability. In market model B, S₁ = 25 with 10% probability and S₁ = 30 with 90% probability. For each market model A, B, determine if the model is arbitrage-free. If not, construct an arbitrage. Total [9 Marks]arrow_forward
- b) Solve the following linear program using the 2-phase simplex algorithm. You should give the initial tableau, and each further tableau produced during the execution of the algorithm. If the program has an optimal solution, give this solution and state its objective value. If it does not have an optimal solution, say why. maximize ₁ - 2x2+x34x4 subject to 2x1+x22x3x41, 5x1 + x2-x3-×4 ≤ −1, 2x1+x2-x3-34 2, 1, 2, 3, 40.arrow_forwardSuppose we have a linear program in standard equation form maximize cTx subject to Ax = b. x ≥ 0. and suppose u, v, and w are all optimal solutions to this linear program. (a) Prove that zu+v+w is an optimal solution. (b) If you try to adapt your proof from part (a) to prove that that u+v+w is an optimal solution, say exactly which part(s) of the proof go wrong. (c) If you try to adapt your proof from part (a) to prove that u+v-w is an optimal solution, say exactly which part(s) of the proof go wrong.arrow_forwarda) Suppose that we are carrying out the 1-phase simplex algorithm on a linear program in standard inequality form (with 3 variables and 4 constraints) and suppose that we have reached a point where we have obtained the following tableau. Apply one more pivot operation, indicating the highlighted row and column and the row operations you carry out. What can you conclude from your updated tableau? x1 x2 x3 81 82 83 84 81 -2 0 1 1 0 0 0 3 82 3 0 -2 0 1 2 0 6 12 1 1 -3 0 0 1 0 2 84 -3 0 2 0 0 -1 1 4 -2 -2 0 11 0 0-4 0 -8arrow_forward
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