The population of the United States P t (in millions) since January 1, 1900, can be approximated by P t = 725 1 + 8.295 e − 0.0165 t where t is the number of year since January 1, 1900. (See Example 6) a. Evaluate P 0 and interpret its meaning in the context of this problem. b. Use the function to approximate the U.S. population on January 1, 2020. Round to the nearest million. c. Use the function to approximate the U.S. population on January 1, 2050. d. From the model, during which year would the U.S. population reach 500 million? e. What value will the term 8.295 e 0.0165 t approach as t → ∞ ? f. Determine the limiting value of P t .
The population of the United States P t (in millions) since January 1, 1900, can be approximated by P t = 725 1 + 8.295 e − 0.0165 t where t is the number of year since January 1, 1900. (See Example 6) a. Evaluate P 0 and interpret its meaning in the context of this problem. b. Use the function to approximate the U.S. population on January 1, 2020. Round to the nearest million. c. Use the function to approximate the U.S. population on January 1, 2050. d. From the model, during which year would the U.S. population reach 500 million? e. What value will the term 8.295 e 0.0165 t approach as t → ∞ ? f. Determine the limiting value of P t .
Solution Summary: The author calculates the value of P(0), where t stands for number of years, and interprets its meaning using the graph given below.
The population of the United States
P
t
(in millions) since January 1, 1900, can be approximated by
P
t
=
725
1
+
8.295
e
−
0.0165
t
where t is the number of year since January 1, 1900. (See Example 6)
a. Evaluate
P
0
and interpret its meaning in the context of this problem.
b. Use the function to approximate the U.S. population on January 1, 2020. Round to the nearest million.
c. Use the function to approximate the U.S. population on January 1, 2050.
d. From the model, during which year would the U.S. population reach 500 million?
e. What value will the term
8.295
e
0.0165
t
approach as
t
→
∞
?
Ministry of Higher Education &
Scientific Research
Babylon University
College of Engineering -
Al musayab
Automobile Department
Subject :Engineering Analysis
Time: 2 hour
Date:27-11-2022
کورس اول تحليلات
تعمیر )
1st month exam / 1st semester (2022-2023)/11/27
Note: Answer all questions,all questions have same degree.
Q1/: Find the following for three only.
1-
4s
C-1
(+2-3)2 (219) 3.0 (6+1)) (+3+5)
(82+28-3),2-
,3-
2-1
4-
Q2/:Determine the Laplace transform of the function t sint.
Q3/: Find the Laplace transform of
1,
0≤t<2,
-2t+1,
2≤t<3,
f(t) =
3t,
t-1,
3≤t 5,
t≥ 5
Q4: Find the Fourier series corresponding to the function
0
-5
Ministry of Higher Education &
Scientific Research
Babylon University
College of Engineering -
Al musayab
Subject :Engineering Analysis
Time: 80 min
Date:11-12-2022
Automobile Department
2nd month exam / 1" semester (2022-2023)
Note: Answer all questions,all questions have same degree.
کورس اول
شعر 3
Q1/: Use a Power series to solve the differential equation:
y" - xy = 0
Q2/:Evaluate using Cauchy's residue theorem,
sinnz²+cosz²
dz, where C is z = 3
(z-1)(z-2)
Q3/:Evaluate
dz
(z²+4)2
Where C is the circle /z-i/-2,using Cauchy's residue theorem.
Examiner: Dr. Wisam N. Hassan
Ministry of Higher Education &
Scientific Research
Babylon University
College of Engineering -
Al musayab
Subject :Engineering Analysis
Time: 80 min
Date:11-12-2022
Automobile Department
2nd month exam / 1" semester (2022-2023)
Note: Answer all questions,all questions have same degree.
کورس اول
شعر 3
Q1/: Use a Power series to solve the differential equation:
y" - xy = 0
Q2/:Evaluate using Cauchy's residue theorem,
sinnz²+cosz²
dz, where C is z = 3
(z-1)(z-2)
Q3/:Evaluate
dz
(z²+4)2
Where C is the circle /z-i/-2,using Cauchy's residue theorem.
Examiner: Dr. Wisam N. Hassan
A Problem Solving Approach To Mathematics For Elementary School Teachers (13th Edition)
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