Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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My question is in the picture.

I have solved part A and am working on parts B-D. I just cant figure out how to draw y(0) = -3 for part b. I think that the limit as x goes to infinity when y(0)=5 is 5, and I dont know how I should go about part D.

dy
3. Given
dx
= -y? + 2y + 15
(a) Sketch the phase line (portrait) and classify all of the critical (equilibrium) points. Use arrows to indicated the
flow on the phase line (away or towards a critical point).
Y= S
(b) Next to your phase line, sketch the graph of solutions passing through the given points:
y(0) = -4, y(0) = -3, y(0) = 1, y(0) = 6
(c) Find lim y(r) for the solution satisfying the initial condition y(0) = 5.
dy
= -y? + 2y + 15, y(0) = 5.
d.r
(d) State the solution to the initial-value problem
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Transcribed Image Text:dy 3. Given dx = -y? + 2y + 15 (a) Sketch the phase line (portrait) and classify all of the critical (equilibrium) points. Use arrows to indicated the flow on the phase line (away or towards a critical point). Y= S (b) Next to your phase line, sketch the graph of solutions passing through the given points: y(0) = -4, y(0) = -3, y(0) = 1, y(0) = 6 (c) Find lim y(r) for the solution satisfying the initial condition y(0) = 5. dy = -y? + 2y + 15, y(0) = 5. d.r (d) State the solution to the initial-value problem
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