Education Technology

Differential Equations on the TI-92 Plus

Activity Overview

This activity acquaints students with the features and capabilities of the calculator that are used to study concepts related to differential equations. Students graph and solve a range of differential equation problems.

Before the Activity

  • Use the TI Connect™ and the TI Connectivity Cable to transfer data from the computer to the calculator
  • See the attached PDF file for detailed instructions for this activity
  • Print pages 1 - 10 from the attached PDF file for your class
  • During the Activity

    Distribute the pages to the class.

    Follow the Activity procedures:

  • Enter a first or second order differential equation (DE) using the Prime operator
  • Use the deSolve command to obtain solutions for the DE
  • Recognize the fact that the independent variable is always t
  • Enter the initial conditions and plot a graph
  • Trace the graph to see numerical values corresponding to the solution
  • Observe the table of values for the solution, and note the values outside the interval
  • Superimpose the analytic solution on the graph
  • Repeat the steps for different problems
  • After the Activity

    Students answer the questions on the activity sheet.

    Review student results:

  • As a class, discuss questions that appeared to be more challenging
  • Re-teach concepts as necessary