Laplace Transform Information using TI89’s Differential Equations Made Easy

  1. To find the Laplace Transform of a piecewise defined function , select Laplace Transform in the Main Menu, next select option3 “Piecewise defined function” in the dropdown menu as shown below:

Next, enter the two pieces/functions as shown below.
c is the breakpoint.

2) To SOLVE a Differential Equation using LaPlace Tranforms such as

y”+2y’+y=0 with Initial Conditions y(0)=1 and y'(0)=1

Select “Solve Diff Eqns using LaPlace Transforms” in the Main menu and enter as follows:

 

Steps are shown until final answer is derived.

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