HP 40gs hp 40gs_user's guide_English_E_HDPMSG40E07A.pdf - Page 65

hp40g+.book Page 1 Friday, December 9, 2005 1:03 AM 3 Function aplet About the Function aplet The Function aplet enables you to explore up to 10 real-valued, rectangular functions y in terms of x. For example y = 2x + 3 . Once you have defined a function you can: • create graphs to find roots, intercepts, slope, signed area, and extrema • create tables to evaluate functions at particular values. This chapter demonstrates the basic tools of the Function aplet by stepping you through an example. See "Aplet views" on page 2-1 for further information about the functionality of the Symbolic, Numeric, and Plot views. Getting started with the Function aplet The following example involves two functions: a linear function y = 1 - x and a quadratic equation y = (x + 3)2 - 2 . Open the Function aplet 1. Open the Function aplet. Select Function The Function aplet starts in the Symbolic view. The Symbolic view is the defining view for Function, Parametric, Polar, and Sequence aplets. The other views are derived from the symbolic expression. Function aplet 3-1