Differential Equations
If a population grows continuously at a rate of 8% per year, which of the following represents the population as a function of time t, given an initial population of 5000?
P(t) = 5000e^{0.08t}
P(t) = 5000 + 0.08t
P(t) = 5000e^{8t}
P(t) = 5000e^{0.08}
For an unchanging population represented by an exponential model , which variable symbolizes carrying capacity?
p.
r.
K.
t.
If you are given a differential equation in the form where is constant, which statement is true about the solution for ?
The solution describes exponential growth if or decay if .
will eventually approach a limiting value regardless of .
The solution represents a linear function when .
If is proportional to , the graph of would be parabolic.
Given the differential equation , where stands for population, how does evolve as it gets close to 100?
Population constantly declines while approaching marginally nearby until past number correctly identified by concept slightly under zero lately shown mistaken outcome relative current documented data.
highest pace growing indefinitely without observing any changes regarding expansion rate accounted initial conditions imposed situation faced prior engagement activity been done previously.
Decreasing populations display periodic behavior fluctuations associated above/below specified maximum level indicated following calculation results obtained. From initial value point set up properly applied throughout process already mentioned above.
Population gradually increases until it nears 100, then slows down appreciably.
Given an exponential model represented by the differential equation , where both r (growth rate) and K (carrying capacity) are positive constants, how does N(t) behave for large t if initially N(0)<K?
It asymptotically approaches K from below without ever reaching it
It surpasses K briefly before settling down exactly at K
It reaches K in finite time then remains constant
It oscillates around K indefinitely without stabilizing
For a bacterial population modeled by the differential equation , where is a constant, if the initial population is 500 and doubles in 3 hours, what is the value of ?
How would one determine when half the maximum carrying capacity is reached in a logistic growth model given by , where and are constants?
Evaluate from to , solving for directly from this integral.
Set up an initial value problem with and use Euler's method to estimate at different steps until .
Find an explicit solution using separation of variables and then solve for when .
Take the derivative of , set it equal to zero, find corresponding critical points for , and then solve for when .

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If , where is a positive constant, what type of growth does exhibit?
Logarithmic growth.
Exponential growth.
Linear growth.
Quadratic growth.
For a certain radioactive substance that decays exponentially, if its half-life is known to be T years, what differential equation models its decay over time?
For a continuously compounded interest account with principal amount and rate of increase governed by , what is if ?
Zero
The initial principal amount,
The product of the principal amount and Euler's number,
Infinity