Differental Equation homework (w/ calc 2 intergrals)

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    Calc 2 Homework
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SUMMARY

The discussion focuses on solving a differential equation related to population dynamics, specifically the logistic growth model represented by the equation dP/dT = KP(N-P). The user seeks assistance in integrating the equation using partial fractions, as indicated by their teacher's hint involving the natural logarithm and the decomposition 1/[P(N-P)] = A/P + B/(N-P). The key conclusion is that understanding partial fractions is essential for successfully solving the integral and finding P(t).

PREREQUISITES
  • Understanding of differential equations, specifically logistic growth models.
  • Knowledge of integration techniques, particularly partial fractions.
  • Familiarity with natural logarithms and their properties.
  • Basic concepts of population dynamics and carrying capacity.
NEXT STEPS
  • Review techniques for solving integrals using partial fractions.
  • Study the logistic growth model in more depth, focusing on its applications in population dynamics.
  • Learn about equilibrium points in differential equations and their significance.
  • Explore more complex differential equations and their solutions in calculus.
USEFUL FOR

Students studying calculus, particularly those tackling differential equations in population dynamics, as well as educators looking for examples of logistic growth models.

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Homework Statement


Carrying capacity N of a population

Assume: small population, dp/dt is proportional to P

if 0<P<N then p(t) increases
if P>N then P(t) decreases
equilibrium means dp/dt = 0


Homework Equations


dP/dT = KP(N-P)

Solve for P(t)


The Attempt at a Solution


∫dP/P(N-P) = ∫kdt ?

My teacher said we'd be using ln(...) and 1/[P(N-P)] = A/P + B/(N-P)


Please help! Thanks. :)
 
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mandymandy said:

Homework Statement


Carrying capacity N of a population

Assume: small population, dp/dt is proportional to P

if 0<P<N then p(t) increases
if P>N then P(t) decreases
equilibrium means dp/dt = 0


Homework Equations


dP/dT = KP(N-P)

Solve for P(t)


The Attempt at a Solution


∫dP/P(N-P) = ∫kdt ?

My teacher said we'd be using ln(...) and 1/[P(N-P)] = A/P + B/(N-P)


Please help! Thanks. :)

You are on the right track. Perhaps you need to review partial fractions to work the integral$$
\int \frac{1}{P(N-P)}\, dP$$Your teacher gave you a pretty good hint there.
 
I can solve it from here I don't know why I was so confused. :) thanks
 

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