Mathematical Models: Mechanical Vibrations, Population Dynamics, and Traffic Flow : an Introduction to Applied Mathematics |
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Page 60
... Consider a spring - mass system with a nonlinear restoring force satisfying m d2x dt 2 - -kx αx3 , where a > 0. Which positions are equilibrium positions ? Are they stable ? 18.5 . Consider a system which satisfies m d2x dt 2 = -kx + ...
... Consider a spring - mass system with a nonlinear restoring force satisfying m d2x dt 2 - -kx αx3 , where a > 0. Which positions are equilibrium positions ? Are they stable ? 18.5 . Consider a system which satisfies m d2x dt 2 = -kx + ...
Page 184
... Consider equation 42.1 . If 0 < α < 4 : ( a ) Show that the population may go beyond the equilibrium ( at most once ) . ( b ) Give an example of an " initial " population that reaches equilibrium only after going beyond the equilibrium ...
... Consider equation 42.1 . If 0 < α < 4 : ( a ) Show that the population may go beyond the equilibrium ( at most once ) . ( b ) Give an example of an " initial " population that reaches equilibrium only after going beyond the equilibrium ...
Page 254
... Consider the three - species ecosystem dF dt dR dt = F ( a + bR - k1G ) - R ( c dF - k2G ) dG dt = G ( k + k3F − k1R ) , assuming all coefficients are positive constants . ( a ) If G = 0 , show that this represents a predator - prey ...
... Consider the three - species ecosystem dF dt dR dt = F ( a + bR - k1G ) - R ( c dF - k2G ) dG dt = G ( k + k3F − k1R ) , assuming all coefficients are positive constants . ( a ) If G = 0 , show that this represents a predator - prey ...
Contents
Mechanical Vibrations 1 | 3 |
NEWTONS LAW | 4 |
AS APPLIED TO A SPRINGMASS SYSTEM | 6 |
Copyright | |
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Mathematical Models: Mechanical Vibrations, Population Dynamics, and Traffic ... Richard Haberman No preview available - 1998 |
Common terms and phrases
amplitude applied approximation Assume calculated called cars characteristics conservation Consider constant continuous corresponding curve decreases density wave depends derived described determine differential equation discussed distance dx dt dx/dt energy equal equilibrium population equilibrium position equivalent example exercise expression Figure force formula friction function given growth rate hence highway illustrated increases indicate initial conditions integral intersect isoclines known length light limit linear manner mass mathematical model maximum measured method motion moving nonlinear number of cars observer obtained occurs oscillation partial differential equation pendulum period phase plane Pmax possible problem region result road satisfies shock Show shown in Fig simple sketched sketched in Fig slope solution solve species spring spring-mass system stable straight line Suppose tion traffic density traffic flow trajectories Umax unstable valid variables yields zero