The biomass B(t) of a fish population is the total mass of the members of the population at time t. It is the product of the number of individuals N(t) in the population and the average mass M(t) of a fish at time t. In the case of guppies, breeding occurs continually. Suppose that at time
To find:
At what rate the biomass increasing when t = 4
Concept used:
Product rule: If f and g are both differentiable, then
Given:
Calculation:
Biomass B(t) of a fish population is product of M(t) and N(t). So
For time t = 4 weeks, the information provided in the question is,
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