Calculating Population Growth Rate using Derivatives

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SUMMARY

The discussion focuses on calculating the derivative of the population growth function P(t) = 500(1 + (4t/(50 + t²))) for a bacterial culture. The participant attempted to apply the product rule, sum and difference rule, and the quotient rule to find P'(2). The derivative was calculated as P'(t) = (10000 - 200t²)/(50 + t²)². The conversation highlights the importance of correctly identifying the rules applicable to the function, particularly noting that the function primarily involves a quotient rather than a product.

PREREQUISITES
  • Understanding of calculus concepts, specifically derivatives.
  • Familiarity with the product rule, quotient rule, and sum and difference rule.
  • Knowledge of function notation and interpretation of P(t) in context.
  • Basic algebraic manipulation skills to simplify expressions.
NEXT STEPS
  • Study the application of the quotient rule in calculus.
  • Practice finding derivatives of rational functions.
  • Explore real-world applications of population growth models in biology.
  • Learn about the interpretation of derivatives in the context of growth rates.
USEFUL FOR

Students studying calculus, particularly those focusing on derivatives and their applications in biological contexts, as well as educators looking for examples of population growth modeling.

cdoss
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Homework Statement


A population of 500 bacteria is introduced into a culture and grows in number according to the equation P(t)=500(1+(4t/(50+t2), where t is measured in hours. Find P'(2), an interpret the results.


Homework Equations





The Attempt at a Solution


I used the product rule, sum and difference rule, and the quotient rule, but it seems like I used it a lot and there is a lot of steps that I used. I think I am over-thinking this problem. But I got 10000-200t2/(50+t2)2
 
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cdoss said:
P(t)=500(1+(4t/(50+t2), where t is measured in hours.
Is it supposed to be this?
P(t) = 500\left( 1 + \frac{4t}{50 + t^2}\right)
I also got something different for P'(t).
 
hi cdoss! :smile:
cdoss said:
I used the product rule, sum and difference rule, and the quotient rule, but it seems like I used it a lot and there is a lot of steps that I used. I think I am over-thinking this problem. But I got 10000-200t2/(50+t2)2

where is there a product? i only see a quotient :confused:

show us your full calculations :smile:
 

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