Mathematics For Machine Technology
8th Edition
ISBN: 9781337798310
Author: Peterson, John.
Publisher: Cengage Learning,
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Textbook Question
Chapter 27, Problem 30A
In Exercises 29 through 32, express each of the given metric units of length as the indicated customary unit of length. Where necessary, round the answer to 2 decimal places.
30. a. 6.00 feet as meters
b. 0.75 foot as meters
c. 3.50 yards as meters
d. I .30 yards as meters
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1. [10 points] Given y₁(x) = x²² is a solution to the differential equation x²y"+6xy'+6y=0 (x>0), find a
second linearly independent solution using reduction of order.
>tt 1:32
> trend.1m 1m (sales
> summary(trend.1m)
-
tt) #3###23 (i) ####
Coefficients:
Estimate Std. Error t value Pr(>|t|)
(Intercept) 2107.220
57.997 36.332e-16 ***
tt
-43.500
3.067 -14.18 7.72e-15 ***
> trend = ts (fitted (trend.1m), start-start (sales), freq-frequency (sales))
sales trend ###23%23 (ii) ####
as.numeric((1:32 %% 4)
> X
> q1
> q2
> q3
> 94
=
=
=
=
-
as.numeric((1:32 %% 4)
as.numeric((1:32 %% 4)
as.numeric((1:32 %% 4)
== 1)
2)
==
== 3)
==
0)
> season.lm = 1m (resid (trend.1m) 0+q1 + q2 + q3 + q4) #3##23%23 (iii) ####
> summary(season.1m)
Coefficients:
Estimate Std. Error t value Pr(>|t|)
q1
-38.41
43.27 -0.888 0.38232
92
18.80
43.27
0.435 0.66719
q3
-134.78
43.27
-3.115 0.00422 **
94
154.38
43.27 3.568
0.00132 **
> season = ts (fitted (season.lm), start=start (sales), freq=frequency (sales))
> Y X season %23%23%23%23 (iv) ####
>ar (Y, aic=FALSE, order.max=1) #23%23%23%23 (v) ####
Coefficients:
1
0.5704
Order selected 1 sigma 2 estimated as 9431
> ar(Y, aic=FALSE,…
Chapter 27 Solutions
Mathematics For Machine Technology
Ch. 27 - Prob. 1ACh. 27 - Of the 2478 pieces manufactured one day, the...Ch. 27 - Prob. 3ACh. 27 - Prob. 4ACh. 27 - Prob. 5ACh. 27 - Prob. 6ACh. 27 - In Exercises 7 through 12, express each of the...Ch. 27 - Prob. 8ACh. 27 - In Exercises 7 through 12, express each of the...Ch. 27 - In Exercises 7 through 12, express each of the...
Ch. 27 - In Exercises 7 through 12, express each of the...Ch. 27 - Prob. 12ACh. 27 - Prob. 13ACh. 27 - In Exercises 13 through 22, perform the indicated...Ch. 27 - Prob. 15ACh. 27 - Prob. 16ACh. 27 - In Exercises 13 through 22, perform the indicated...Ch. 27 - Prob. 18ACh. 27 - Prob. 19ACh. 27 - Prob. 20ACh. 27 - Prob. 21ACh. 27 - In Exercises 13 through 22, perform the indicated...Ch. 27 - An aluminum slab 0.082 meter thick is machined...Ch. 27 - A piece of sheet metal is 1.12 meters wide. Strips...Ch. 27 - In Exercises 25 through 28, express each of the...Ch. 27 - In Exercises 25 through 28, express each of the...Ch. 27 - In Exercises 25 through 28, express each of the...Ch. 27 - Prob. 28ACh. 27 - In Exercises 29 through 32, express each of the...Ch. 27 - In Exercises 29 through 32, express each of the...Ch. 27 - In Exercises 29 through 32, express each of the...Ch. 27 - Prob. 32ACh. 27 - Determine the total length of stock in inches...Ch. 27 - Prob. 34ACh. 27 - Prob. 35A
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