The rate of changedtdP of the number of people in a park is modeled by the following differential equation:dtdP=368164085P(1−860P)At t=0, the number of people in the park is 236 and is increasing at a rate of 19 people per hour. Find limt→∞P′(t).Answer:
Q. The rate of change dtdP of the number of people in a park is modeled by the following differential equation:dtdP=368164085P(1−860P)At t=0, the number of people in the park is 236 and is increasing at a rate of 19 people per hour. Find limt→∞P′(t).Answer:
Analyze Differential Equation: Analyze the given differential equation.The differential equation given is dtdP=368164085P(1−860P). This is a logistic growth model where the growth rate of the population P is proportional to both the current population and the difference between the current population and the carrying capacity, which in this case is 860.
Determine Steady State: Determine the steady state of the population.In the logistic growth model, the steady state, or equilibrium, occurs when the rate of change of the population dtdP is zero. This happens when P is at its carrying capacity or when P is zero. Since we are looking for the limit as t approaches infinity, we are interested in the carrying capacity, which is P=860.
Calculate Limit: Calculate the limit of P′(t) as t approaches infinity.As t approaches infinity, the population P approaches its carrying capacity. Therefore, the term (1−860P) in the differential equation will approach zero, because P will be very close to 860. This means that the rate of change of the population dtdP will also approach zero.
Conclude Result: Conclude the limit of P′(t) as t approaches infinity.Since the rate of change of the population dtdP approaches zero as t approaches infinity, we can conclude that limt→∞P′(t)=0.
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