HP 39gII - The Sequence App

30 HP App Summaries
HP App Summaries30
The Sequence App
The Sequence App lets you define up to ten sequences, either recursively or in terms of n. You can view a stairstep or cobweb plot of your
sequences, and explore a table of sequence values. Table 11 summarizes the functionality in this App. Press Apps, scroll down to select
the Sequence App, and press the START menu key to get started. Like the Function and Solve Apps, the Sequence App starts in the Sym-
bolic view.
Table 11 Sequence App Summary
Summary of Functionality View Name and Display
Press Symb to return to this view at any time. Use this view to enter and manage up to ten
sequence definitions in n. The first two terms of each sequence are entered numerically, and
the n
th
term is defined either recursively or in terms of n. The menu items are:
• EDIT: opens an input box to edit the chosen definition
• CHK: toggles the current item on or off
• (N-2), (N-1), N, U1: typing aids
• CANCL: cancels the current edit
• OK: accepts the current edit
Sequence Symbolic View
Press Plot to enter the Plot view and work with sequence graphs. The menu items are:
• ZOOM: enters the Zoom menu, with options to zoom in or out
• TRACE: toggles the tracing cursor off and on
• GOTO: takes the tracing cursor to the point on the sequence with a given value of n.
• DEFN: displays the symbolic definition of the current sequence
• MENU: toggles the menu off and on
Sequence Plot View