Logistic Functions Part 2
In this lesson on logistic functions, the instructor demonstrates how to find the parameter values of a logistic model. By using real-world examples, the instructor shows how to find the values for the three parameters: A, B, and L. They also explain how to use a calculator and Solver to solve equations and find these values quickly. By the end of the lesson, students should be able to recognize the algebraic form for a logistic model and understand the meaning of each parameter in the context of the functional relationship.
Be familiar with and recognize the algebraic form for a logistic model, including the corresponding parameters and if those parameters have any meaning in the context of the functional relationship (e.g. does a parameter control the initial value, rate of change (shape), decreasing or increasing (flip), max/min, limiting values, etc.).
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- Notes - Notes from this lesson.
- What is a logistic function?
- How do you find the parameter values in a logistic model?
- How do you enter a logistic function y = L/(1 + AB^(-KT))-S into a TI graphing calculator?
- What is the limiting value of a logistic function and how do you find it?
- What is the initial value of a logistic function and how do you find it?
- How can you use the Equation Solver on a TI graphing calculator to solve for values in a logistic function?
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Staff Review
This lesson starts right off with a problem situation and goes through the solution to the problem to find the values of the parameters. A couple of different scenarios are covered depending on what values you are given. All steps are explained very well. A TI graphing calculator is used to help solve this problem.
