HP 40gs hp 40gs_user's guide_English_E_HDPMSG40E07A.pdf - Page 77

hp40g+.book Page 1 Friday, December 9, 2005 1:03 AM 4 Parametric aplet About the Parametric aplet The Parametric aplet allows you to explore parametric equations. These are equations in which both x and y are defined as functions of t. They take the forms x = f(t) and y = g(t) . Getting started with the Parametric aplet The following example uses the parametric equations x(t) = 3 sint y(t) = 3 cost Note: This example will produce a circle. For this example to work, the angle measure must be set to degrees. Open the Parametric aplet 1. Open the Parametric aplet. Select Parametric Define the expressions 2. Define the expressions. 3 3 Parametric aplet 4-1