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Unformatted text preview: y ² = A ± x y ² . where A = ±-4 9 ² . then solve for x ( t ) and y ( t ). (b) Show that 9 x 2 + 4 y 2 = const. What can you say about the phase plane of the the diﬀerential system in part (a) (Make sure to graph it using pplane )? 3 Question 3. Solve y 00 + 16 y = sin 4 x...
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- Spring '08
- Math, Boundary value problem, Model theory