Economics Dynamics Problems 191

Economics Dynamics Problems 191 - Systems of rst-order...

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Systems of Frst-order differential equations 175 Figure 4.24. Figure 4.25. or ± ˙ x ˙ y ² = ± αβ βα ²± x y ² Now express the system in terms of polar coordinates with R and θ , where R 2 = x 2 + y 2 and tan θ = y x and ˙ R = α R which results in R = ce
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