Calculus and Its Applications (11th Edition)
11th Edition
ISBN: 9780321979391
Author: Marvin L. Bittinger, David J. Ellenbogen, Scott J. Surgent
Publisher: PEARSON
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Textbook Question
Chapter A, Problem 56E
Simplify.
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The spread of an infectious disease is often modeled using the following autonomous differential equation:
dI
-
- BI(N − I) − MI,
dt
where I is the number of infected people, N is the total size of the population being modeled, ẞ is a constant determining the rate of
transmission, and μ is the rate at which people recover from infection.
Close
a) (5 points) Suppose ẞ = 0.01, N = 1000, and µ = 2. Find all equilibria.
b) (5 points) For the equilbria in part a), determine whether each is stable or unstable.
c) (3 points) Suppose ƒ(I) = d. Draw a phase plot of f against I. (You can use Wolfram Alpha or Desmos to plot the function, or draw the
dt
function by hand.) Identify the equilibria as stable or unstable in the graph.
d) (2 points) Explain the biological meaning of these equilibria being stable or unstable.
Find the indefinite integral.
Check
Answer:
7x
4 + 1x
dx
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Chapter A Solutions
Calculus and Its Applications (11th Edition)
Ch. A - Express as an equivalent expression without...Ch. A - Express as an equivalent expression without...Ch. A - Express as an equivalent expression without...Ch. A - Express as an equivalent expression without...Ch. A - Prob. 5ECh. A - Prob. 6ECh. A - Prob. 7ECh. A - Express as an equivalent expression without...Ch. A - Express as an equivalent expression without...Ch. A - Express as an equivalent expression without...
Ch. A - Prob. 11ECh. A - Prob. 12ECh. A - Express as an equivalent expression without...Ch. A - Express as an equivalent expression without...Ch. A - Express as an equivalent expression without,...Ch. A - Express as an equivalent expression without,...Ch. A - Express as an equivalent expression without,...Ch. A - Express as an equivalent expression without,...Ch. A - Express as an equivalent expression without,...Ch. A - Express as an equivalent expression without,...Ch. A - Express as an equivalent expression without,...Ch. A - Express as an equivalent expression without,...Ch. A - Express as an equivalent expression without,...Ch. A - Express as an equivalent expression without,...Ch. A - Prob. 25ECh. A - Express as an equivalent expression without,...Ch. A - Prob. 27ECh. A - Multiply. t3t4Ch. A - Multiply. x7xCh. A - Multiply. x5xCh. A - Multiply.
31.
Ch. A - Multiply. 4t32t4Ch. A - Multiply.
33.
Ch. A - Multiply. x3xx3Ch. A - Multiply.
35.
Ch. A - Multiply. ekekCh. A - Divide. x5x2Ch. A - Divide.
38.
Ch. A - Divide. x2x5Ch. A - Divide. x3x7Ch. A - Divide.
41.
Ch. A - Divide. tktkCh. A - Divide. ete4Ch. A - Divide.
44.
Ch. A - Divide. t6t8Ch. A - Divide. t5t7Ch. A - Prob. 47ECh. A - Prob. 48ECh. A - Prob. 49ECh. A - Prob. 50ECh. A - Simplify. (t2)3Ch. A - Simplify. (t3)4Ch. A - Simplify.
53.
Ch. A - Simplify.
54.
Ch. A - Simplify.
55.
Ch. A - Simplify.
56.
Ch. A - Prob. 57ECh. A - Simplify.
58.
Ch. A - Simplify.
59.
Ch. A - Prob. 60ECh. A - Simplify. (cd32q2)2Ch. A - Simplify.
62.
Ch. A - Prob. 63ECh. A - Multiply. x(1+t)Ch. A - Multiply. (x5)(x2)Ch. A - Multiply. (x4)(x3)Ch. A - Multiply.
67.
Ch. A - Prob. 68ECh. A - Prob. 69ECh. A - Multiply. (3x+4)(x1)Ch. A - Prob. 71ECh. A - Prob. 72ECh. A - Multiply.
73.
Ch. A - Prob. 74ECh. A - Prob. 75ECh. A - Multiply.
76.
Ch. A - Multiply.
77.
Ch. A - Prob. 78ECh. A - Multiply. 5x(x2+3)2Ch. A - Prob. 80ECh. A - Use the following equation for Exercises...Ch. A - Use the following equation for Exercises 81-84....Ch. A - Prob. 83ECh. A - Use the following equation for Exercises...Ch. A - Factor. xxtCh. A - Factor.
86.
Ch. A - Factor. x2+6xy+9y2Ch. A - Factor. x210xy+25y2Ch. A - Factor.
89.
Ch. A - Factor.
90.
Ch. A - Prob. 91ECh. A - Factor.
92.
Ch. A - Prob. 93ECh. A - Factor. 9x2b2Ch. A - Prob. 95ECh. A - Factor.
96.
Ch. A - Factor.
97.
Ch. A - Factor. 2x432Ch. A - Factor. a8b8Ch. A - Prob. 100ECh. A - Prob. 101ECh. A - Prob. 102ECh. A - Factor.
103.
Ch. A - Factor. 2xy250xCh. A - Factor.
105.
Ch. A - Factor. 6x223x+20Ch. A - Factor. x3+8 (Hint: See Exercise 68.)Ch. A - Factor. a327 (Hint: See Exercise 67.)Ch. A - Factor. y364t3Ch. A - Factor.
110.
Ch. A - Factor. 3x36x2x+2Ch. A - Factor.
112.
Ch. A - Factor. x35x29x+45Ch. A - Factor. t3+3t225t75Ch. A - Solve.
115.
Ch. A - Solve. 8x+9=4x70Ch. A - Solve.
117.
Ch. A - Solve. 5x2+3x=2x+64xCh. A - Solve.
119.
Ch. A - Solve.
120.
Ch. A - Solve.
121.
Ch. A - Solve. x+0.05x=210Ch. A - Solve.
123.
Ch. A - Solve. 7x(x2)(2x+3)=0Ch. A - Solve.
125.
Ch. A - Solve. 2t2=9+t2Ch. A - Solve.
127.
Ch. A - Solve.
128.
Ch. A - Solve.
129.
Ch. A - Solve.
130.
Ch. A - Solve.
131.
Ch. A - Solve.
132.
Ch. A - Solve. (x3)2=x2+2x+1Ch. A - Solve. (x5)2=x2+x+3Ch. A - Solve. 4xx+5+100x2+5xCh. A - Solve.
136.
Ch. A - Solve. 50x50x2=4xCh. A - Solve.
138.
Ch. A - Solve.
139.
Ch. A - Solve. 535x2=0Ch. A - Solve.
141.
Ch. A - Solve. x2=144Ch. A - Solve.
143.
Ch. A - Solve.
144.
Ch. A - Solve. 4t2=49Ch. A - Solve. 100k2=169Ch. A - Solve.
147.
Ch. A - Prob. 148ECh. A - Solve.
149.
Ch. A - Solve.
150.
Ch. A - Solve.
151.
Ch. A - Solve. (6x+5)2=400Ch. A - Solve.
153.
Ch. A - Solve. (14y)2=2Ch. A - Solve.
155.
Ch. A - Solve.
156.
Ch. A - Solve.
157.
Ch. A - Solve. 3x3+3x17x9Ch. A - Solve. 7x4Ch. A - Prob. 160ECh. A - Solve.
161.
Ch. A - Solve. 9x+3x24Ch. A - Solve. 2x75x9Ch. A - Solve. 10x313x8Ch. A - Solve.
165.
Ch. A - Solve.
166.
Ch. A - Solve. 83x+214Ch. A - Prob. 168ECh. A - Solve.
169.
Ch. A - Solve.
170.
Ch. A - Prob. 171ECh. A - Solve.
172.
Ch. A - Investment increase. An investment is made at 812...Ch. A -
174. Investment increase. An investment is made...Ch. A - 175. Total revenue. Sunshine Products determines...Ch. A - Prob. 176ECh. A - Weight gain. After a 6% gain in weight, an elk...Ch. A - Weight gain. After a 7% gain in weight, a deer...Ch. A - Population increase. After a 2% increase, the...Ch. A - Population increase. After a 3% increase, the...Ch. A - Grade average. To get a B in a course, a students...Ch. A - 182. Grade average. To get a C in a course, a...Ch. A - Auditorium seating. The seats at Ardon Auditorium...Ch. A -
184. Tiling a room. The conference room at the...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, calculus and related others by exploring similar questions and additional content below.Similar questions
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- Find the indefinite integral. Check Answer: 7x 4 + 1x dxarrow_forwardHere is a region R in Quadrant I. y 2.0 T 1.5 1.0 0.5 0.0 + 55 0.0 0.5 1.0 1.5 2.0 X It is bounded by y = x¹/3, y = 1, and x = 0. We want to evaluate this double integral. ONLY ONE order of integration will work. Good luck! The dA =???arrow_forward43–46. Directions of change Consider the following functions f and points P. Sketch the xy-plane showing P and the level curve through P. Indicate (as in Figure 15.52) the directions of maximum increase, maximum decrease, and no change for f. ■ 45. f(x, y) = x² + xy + y² + 7; P(−3, 3)arrow_forward
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