Exploring Graphs With The Zoom Instructions - Texas Instruments TI-84 PLUS - Graphing Calculator Manual Book

Panning to the Left or Right
If you trace a function beyond the left or right side of the screen, the viewing window automatically
pans to the left or right.
Quick Zoom
While tracing, you can press Í to adjust the viewing window so that the cursor location
becomes the center of the new viewing window, even if the cursor is above or below the display.
This allows panning up and down. After Quick Zoom, the cursor remains in TRACE.
Leaving and Returning to TRACE
When you leave and return to TRACE, the trace cursor is displayed in the same location it was in
when you left TRACE, unless Smart Graph has replotted the graph.
Using TRACE in a Program
On a blank line in the program editor, press r. The instruction
location. When the instruction is encountered during program execution, the graph is displayed
with the trace cursor on the first selected function. As you trace, the cursor coordinate values are
updated. When you finish tracing the functions, press Í to resume program execution.

Exploring Graphs with the ZOOM Instructions

ZOOM Menu
menu, press q. You can adjust the viewing window of the graph quickly
To display the
ZOOM
in several ways. All ZOOM instructions are accessible from programs.
ZOOM MEMORY
1: ZBox
2: Zoom In
3: Zoom Out
4: ZDecimal
5: ZSquare
6: ZStandard
7: ZTrig
8: ZInteger
9: ZoomStat
0: ZoomFit
A: ZQuadrant1
and are updated to correspond to the new viewing window.
Xmin Xmax
Draws a box to define the viewing window.
Magnifies the graph around the cursor.
Views more of a graph around the cursor.
Sets X and Y to 0.1.
@ @
Sets equal-size pixels on the X and Y axes.
Sets the standard window variables.
Sets the built-in trig window variables.
Sets integer values on the X and Y axes.
Sets the values for current stat lists.
Fits YMin and YMax between XMin and XMax.
Displays the portion of the graph that is in quadrant 1
is pasted to the cursor
Trace
Chapter 3: Function Graphing 80