
7 Function app
The Function app enables you to explore up to 10 real-valued, rectangular functions of y in terms of x; for
example, y = 1 – x and y = (x – 1)
2
– 3.
Once you have dened a function you can do the following:
●
Create graphs to nd roots, intercepts, slope, signed area, and extrema
●
Create tables that show how functions are evaluated at particular values
This chapter demonstrates the basic functions of the Function app by stepping you through an example. The
HP Prime calculator can perform more complex functions.
Getting started with the Function app
The Function app uses the customary app views: Symbolic, Plot, and Numeric.
The standard Symbolic, Plot, and Numeric view menu buttons are available.
Throughout this chapter, we will explore the linear function y = 1 – x and the quadratic function y = (x – 1)
2
– 3.
Opening the Function app
▲
Press , and then select Function to open the Function app.
Remember that you can open an app by tapping its icon. You can also open it by using the cursor keys to
highlight it and then pressing .
The Function app starts in Symbolic view. This is the “dening view.” It is where you symbolically dene (that
is, specify) the functions you want to explore.
The graphical and numerical data you see in Plot view and Numeric view are derived from the symbolic
expressions dened here.
Getting started with the Function app 109
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