Numerical Methods for Engineers
7th Edition
ISBN: 9780073397924
Author: Steven C. Chapra Dr., Raymond P. Canale
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 19, Problem 15P
Use the Excel Data Analysis ToolPak to develop a regression polynomial to the following data for the dissolved oxygen concentration of fresh water versus temperature at sea level. Determine the order of polynomial necessary to match the precision of these data.
| T, °C | 0 | 8 | 16 | 24 | 32 | 40 |
| o, mg/L | 14.62 | 11.84 | 9.87 | 8.42 | 7.31 | 6.41 |
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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)
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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-
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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…
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Chapter 19 Solutions
Numerical Methods for Engineers
Ch. 19 - The average values of a function can be determined...Ch. 19 - The solar radiation for Tucson, Arizona, has been...Ch. 19 - 19.3 The pH in a reactor varies sinusoidally over...Ch. 19 - 19.4 Use a continuous Fourier series to...Ch. 19 - 19.5 Use a continuous Fourier series to...Ch. 19 - Construct amplitude and phase line spectra for...Ch. 19 - 19.7 Construct amplitude and phase line spectra...Ch. 19 - 19.8 A half-wave rectifier can be characterized...Ch. 19 - 19.9 Construct amplitude and phase line spectra...Ch. 19 - Develop a user-friendly program for the DFT based...
Ch. 19 - 19.11 Use the program from Prob. 19.10 to compute...Ch. 19 - 19.12 Develop a user-friendly program for the FFT...Ch. 19 - 19.13 Repeat Prob. 19.11 using the software you...Ch. 19 - An object is suspended in a wind tunnel and the...Ch. 19 - 19.15 Use the Excel Data Analysis ToolPak to...Ch. 19 - Use the Excel Data Analysis Toolpack to fit a...Ch. 19 - (a) Use MATLAB to fit a cubic spline to the...Ch. 19 - 19.18 Use MATLAB to generate 64 points from the...Ch. 19 - In a fashion similar to Sec. 19.8.2, use MATLAB to...Ch. 19 - Runges function is written as f(x)=11+25x2...Ch. 19 - A dye is injected into the circulating blood...Ch. 19 - In electric circuits, it is common to see current...Ch. 19 - Develop a plot of the following data with (a)...
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