Consider the differential equation 96 p(p-1.75)(p-2.75) for the population p (in thousands) of a certain species at time t. Complete parts (a) through (e) below

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Consider the differential equation=p(p-1.75)(p-2.75) for the population p (in thousands) of a certain species at time t. Complete parts (a) through (e) below.
dt
(a) Sketch the direction field by using either a computer software package or the method of isoclines. Choose the correct sketch below.
OA.
AF
O B.
Ap
Q
G
(b) If the initial population is 3600 [that is, p(0) = 3.6], what can be said about the limiting population lim p(t)?
1→ +00
If p(0) = 3.6, then lim p(t)=. The population will
1+ +00
(c) If p(0) = 2, what can be said about the limiting population lim p(t)?
1→ +00
If p(0) = 2, then lim p(t)= The population will
1→ +00
(d) If p(0) = 0.4, what can be said about the limiting population lim p(t)?
14.0
If p(0) = 0.4, then lim p(t)=. The population will
1+00
(e) Can a population of 2400 ever increase to 2900?
Q
O C.
Ap
it ▼possible for a population of 2400 to increase to 2900. One solution of the given differential equation is the horizontal line p(t) = If the population were to increase from 2400 to 2900, the corresponding solution curve would
by the existence-uniqueness theorem.
Q
that horizontal line. This would
what is guaranteed
Transcribed Image Text:dp Consider the differential equation=p(p-1.75)(p-2.75) for the population p (in thousands) of a certain species at time t. Complete parts (a) through (e) below. dt (a) Sketch the direction field by using either a computer software package or the method of isoclines. Choose the correct sketch below. OA. AF O B. Ap Q G (b) If the initial population is 3600 [that is, p(0) = 3.6], what can be said about the limiting population lim p(t)? 1→ +00 If p(0) = 3.6, then lim p(t)=. The population will 1+ +00 (c) If p(0) = 2, what can be said about the limiting population lim p(t)? 1→ +00 If p(0) = 2, then lim p(t)= The population will 1→ +00 (d) If p(0) = 0.4, what can be said about the limiting population lim p(t)? 14.0 If p(0) = 0.4, then lim p(t)=. The population will 1+00 (e) Can a population of 2400 ever increase to 2900? Q O C. Ap it ▼possible for a population of 2400 to increase to 2900. One solution of the given differential equation is the horizontal line p(t) = If the population were to increase from 2400 to 2900, the corresponding solution curve would by the existence-uniqueness theorem. Q that horizontal line. This would what is guaranteed
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