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Thomas Calculus 13th [Solutions]

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Section 9.4 Graphical <strong>Solutions</strong> of Autonomous Equations 679<br />

(c)<br />

4. y y( y 2)<br />

(a) y 0 is a stable equilibrium value and y 2 is an unstable equilibrium.<br />

(b) y (2y 2) y 2 y( y 1)( y 2)<br />

(c)<br />

5. y y, y 0<br />

(a) There are no equilibrium values.<br />

y y y<br />

(b)<br />

1 1 1<br />

2 y 2 y 2<br />

(c)<br />

6. y y y, y 0<br />

(a) y 1 is an unstable equilibrium.<br />

(b) y 1 1 y 1 1 y y y 1<br />

2 2<br />

2<br />

y 1<br />

y<br />

y<br />

Copyright<br />

2014 Pearson Education, Inc.

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