Math Problem Statement

A population grows according to the logistic growth​ model, with growth parameter requals0.9. Starting with an initial population given by p Subscript 0equals0.3​, complete parts ​(a) and ​(b). Question content area bottom Part 1 ​(a) Find the values of p Subscript 1 through p Subscript 10. p 1equals    0.189​, p 2equals    enter your response here​, p 3equals    enter your response here​, p 4equals    enter your response here​, p 5equals    enter your response here​, p 6equals    enter your response here​, p 7equals    enter your response here​, p 8equals    enter your response here​, p 9equals    enter your response here​, p 10equals    enter your response here ​(Round to four decimal places as​ needed.)

Solution

To solve this problem, we use the logistic growth model equation:

pn+1=rpn(1pn)p_{n+1} = r \cdot p_n \cdot (1 - p_n)

Where:

  • r=0.9r = 0.9 (growth parameter),
  • p0=0.3p_0 = 0.3 (initial population),
  • nn denotes the step.

Given p0=0.3p_0 = 0.3, let's calculate p1,p2,,p10p_1, p_2, \ldots, p_{10} using the recurrence formula. We'll round each result to four decimal places.

Step-by-step Calculations:

  1. Initial Population: p0=0.3p_0 = 0.3.
  2. Calculate p1p_1: p1=rp0(1p0)=0.90.3(10.3)=0.90.30.7=0.189p_1 = r \cdot p_0 \cdot (1 - p_0) = 0.9 \cdot 0.3 \cdot (1 - 0.3) = 0.9 \cdot 0.3 \cdot 0.7 = 0.189
  3. Use the same formula iteratively for p2p_2 through p10p_{10}.

Let me compute these values step by step. Parameters r = 0.9 # growth parameter p_0 = 0.3 # initial population

Iterative calculation of p_n for n = 1 to 10

populations = [p_0] # list to store p_n values for n in range(1, 11): p_next = r * populations[-1] * (1 - populations[-1]) populations.append(round(p_next, 4)) # round to 4 decimal places

populationsThe values of p1p_1 through p10p_{10} are:

p_1 &= 0.189 \\ p_2 &= 0.138 \\ p_3 &= 0.1071 \\ p_4 &= 0.0861 \\ p_5 &= 0.0708 \\ p_6 &= 0.0592 \\ p_7 &= 0.0501 \\ p_8 &= 0.0428 \\ p_9 &= 0.0369 \\ p_{10} &= 0.0320 \end{aligned}$$ Let me know if you need help with part (b), further explanation, or any other details. ### Expanding Questions: 1. How does the logistic growth model compare to exponential growth? 2. What would happen to the population if the growth parameter $$r$$ were increased? 3. How does the value of $$p_n$$ change as $$n \to \infty$$? 4. What is the significance of $$1 - p_n$$ in the logistic growth formula? 5. Can you deduce a general behavior or trend in $$p_n$$ values from this problem? ### Tip: In a logistic model, the population tends to stabilize (approach a steady state) as $$n$$ increases, depending on the value of $$r$$.

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Math Problem Analysis

Mathematical Concepts

Logistic Growth Model
Recurrence Relations
Population Dynamics

Formulas

pₙ₊₁ = r * pₙ * (1 - pₙ)

Theorems

Logistic Growth Theory

Suitable Grade Level

Grades 10-12