The Pacific halibut fishery has been modeled by the differential equation dy/dt=ky(1-y/m) where y(t) is the biomass (the total mass of the members of the population) in kilograms at time t (measured in years), the carrying capacity is estimated to be M = 6 × 107 kg, and k = 0.79 per year. (a) If y(0) = 2 × 107 kg, find the biomass a year later. (Round your answer to two decimal places.)                           × 107 kg (b) How long will it take for the biomass to reach 4 × 107 kg? (Round your answer to two decimal places.)                                  yr

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter11: Differential Equations
Section11.1: Solutions Of Elementary And Separable Differential Equations
Problem 59E: According to the solution in Exercise 58 of the differential equation for Newtons law of cooling,...
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The Pacific halibut fishery has been modeled by the differential equation
dy/dt=ky(1-y/m)

where y(t) is the biomass (the total mass of the members of the population) in kilograms at time t (measured in years), the carrying capacity is estimated to be M = 6 × 107 kg, and k = 0.79 per year.

(a) If y(0) = 2 × 107 kg, find the biomass a year later. (Round your answer to two decimal places.)
                          × 107 kg

(b) How long will it take for the biomass to reach 4 × 107 kg? (Round your answer to two decimal places.)
                                 yr
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