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Function app 111
6
Function app
The Function app enables you to explore up to 10 real-
valued, rectangular functions of y in terms of x; for
example, and .
Once you have defined a function you can:
• create graphs to find roots, intercepts, slope, signed
area, and extrema, and
• create tables that show how functions are evaluated
at particular values.
This chapter demonstrates the basic functionality of the
Function app by stepping you through an example. More-
complex functionality is described in chapter 5, “An
introduction to HP apps”, beginning on page 69.
Getting started with the Function app
The Function app uses the customary app views: Symbolic,
Plot and Numeric described in chapter 5.
For a description of the menu buttons available in this
app, see:
• “Symbolic view: Summary of menu buttons” on
page 86
• “Plot view: Summary of menu buttons” on page 96,
and
• “Numeric view: Summary of menu buttons” on
page 104.
Throughout this chapter, we will explore the linear function
and the quadratic function .
y 1 x–=
y x 1–
2
3–=
y 1 x–=
y x 1–
2
3–=