Exponential and Logarithmic Functions - Applications of Exponential and Logarithmic Functions

Exponential and Logarithmic Functions - Applications of Exponential and Logarithmic Functions

IP 3

The stated population 1226 is rounded to the nearest animal. Treat the given time of the maximum as exact and the supplied count as approximate.

The population of a gold-mining town, \(N\), initially grew over time, reaching a maximum of \(1226\) after \(3\frac{1}{3}\) years. However, as the gold supply was depleted, the population began to decline.

The population at any time \(t\) (in years) is modelled by the equation:\(N=1000t{{\mathrm{e}}^{-at}}\), where \(a\) is a constant. The diagram illustrates the behaviour of the population over time.

  1. Calculate the population of the town at \(t=0\).
  2. Find the population of the town when \(t=2\).
  3. Describe the behaviour of the population as \(t\) increases indefinitely.

Video Solution:

Video Solution

Video solution locked

A free account saves your progress; this video needs a course plan.

Solution:

Solution locked

680+ questions here come with free worked solutions. A free account saves your questions and progress; this one needs a course plan.

Answer:(i) 0. (ii) 1098, using the stated time of the maximum and treating 1226 as a rounded count. (iii) The population approaches zero.

Need help? Join our A-Maths tuition classes.

Learn more