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3. Imagine you fill your bathtub up at a rate of 2 gallons per minute. This means that every minute you should have 2 more gallons of water than in the minute prior. Suppose you drain the tub at a rate of 0.5 gallons per minute. This means that every minute you will see 0.5 gallons of water leave through the drain. So, what is the net rate of water change per minute? Since each minute 2 gallons are gained and 0.5 gallons are lost, we expect a net gain of 1.5 gallons per minute. Let's think about a population in a similar way: inflow outflow net rate rate rate Regardless of the particular application (i.e. populations, water, temperature, etc.), this can be better seen by using the bathtub analogy below: populucion A d

3. Imagine you fill your bathtub up at a rate of 2 gallons per minute. This means that every minute you should have 2 more gallons of water than in the minute prior. Suppose you drain the tub at a rate of 0.5 gallons per minute. This means that every minute you will see 0.5 gallons of water leave through the drain. So, what is the net rate of water change per minute? Since each minute 2 gallons are gained and 0.5 gallons are lost, we expect a net gain of 1.5 gallons per minute. Let's think about a population in a similar way: inflow outflow net rate rate rate Regardless of the particular application (i.e. populations, water, temperature, etc.), this can be better seen by using the bathtub analogy below: populucion A d

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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3. Imagine you fill your bathtub up at a rate of 2 gallons per minute. This means that every minute you should have 2 more gallons of water than in the minute prior. Suppose you drain the tub at a rate of 0.5 gallons per minute. This means that every minute you will see 0.5 gallons of water leave through the drain. So, what is the net rate of water change per minute? Since each minute 2 gallons are gained and 0.5 gallons are lost, we expect a net gain of 1.5 gallons per minute. Let's think about a population in a similar way: net inflow outflow rate rate rate Regardless of the particular application (i.e. populations, water, temperature, etc.), this can be better seen by using the bathtub analogy below: migration population level 2 A dinse
Transcribed Image Text:3. Imagine you fill your bathtub up at a rate of 2 gallons per minute. This means that every minute you should have 2 more gallons of water than in the minute prior. Suppose you drain the tub at a rate of 0.5 gallons per minute. This means that every minute you will see 0.5 gallons of water leave through the drain. So, what is the net rate of water change per minute? Since each minute 2 gallons are gained and 0.5 gallons are lost, we expect a net gain of 1.5 gallons per minute. Let's think about a population in a similar way: net inflow outflow rate rate rate Regardless of the particular application (i.e. populations, water, temperature, etc.), this can be better seen by using the bathtub analogy below: migration population level 2 A dinse
births immigration 1 culling, starvation, weather, disease, old age, accidents a. Suppose that we wish to model the amount of water in a reservoir (millions of gallons), y, as a function of time (years after today), t. Water is collected at a rate of 3 million gallons per year. The water is used for agriculture and for human consumption at a rate of 3.4 million gallons per year. Write a model, dy/dt, to keep track of the rate at which water is changing per unit time. b. Suppose y(0) = 12.75. How long will it be before the reservoir is empty? inflow population level
Transcribed Image Text:births immigration 1 culling, starvation, weather, disease, old age, accidents a. Suppose that we wish to model the amount of water in a reservoir (millions of gallons), y, as a function of time (years after today), t. Water is collected at a rate of 3 million gallons per year. The water is used for agriculture and for human consumption at a rate of 3.4 million gallons per year. Write a model, dy/dt, to keep track of the rate at which water is changing per unit time. b. Suppose y(0) = 12.75. How long will it be before the reservoir is empty? inflow population level
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