For a fish swimming at a speed v relative to the water, the energy expenditure per unit time is proportional to v. It is believed that migrating fish try to minimize the total energy required to swim a fixed distance. If the fish are swimming against a current u (u < v), then he time required to swim a distance L is L/(v-u) and the total energy E required to swim the distance is given by L E(v) = av³. v – u where a is the proportionality constant. Determine the value of v that minimizes E. (Your answer may depend on L, u and a).
For a fish swimming at a speed v relative to the water, the energy expenditure per unit time is proportional to v. It is believed that migrating fish try to minimize the total energy required to swim a fixed distance. If the fish are swimming against a current u (u < v), then he time required to swim a distance L is L/(v-u) and the total energy E required to swim the distance is given by L E(v) = av³. v – u where a is the proportionality constant. Determine the value of v that minimizes E. (Your answer may depend on L, u and a).
Chapter3: Polynomial Functions
Section3.5: Mathematical Modeling And Variation
Problem 7ECP: The kinetic energy E of an object varies jointly with the object’s mass m and the square of the...
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