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Texas Instruments TI-89 Titanium User Manual

Texas Instruments TI-89 Titanium
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Parametric Graphing 339
Zoom
Works just as it does for function graphs, with the
following exceptions:
•Only x (xmin, xmax, xscl) and y (ymin, ymax, yscl)
Window variables are affected.
The
t Window variables (tmin, tmax, tstep) are not
affected unless you select
6:ZoomStd (which sets
tmin = 0, tmax = 2p, and tstep = p/24).
Trace
Lets you move the cursor along a graph one tstep at a
time.
When you begin a trace, the cursor is on the first
selected parametric equation at
tmin.
QuickCenter applies to all directions. If you move the
cursor off the screen (top or bottom, left or right), press
¸ to center the viewing window on the cursor
location.
Automatic panning is not available. If you move the
cursor off the left or right side of the screen, the TI-89
Titanium will not automatically pan the viewing window.
However, you can use QuickCenter.
Math
Only 1:Value, 6:Derivatives, 9:Distance, A:Tangent,
and B:Arc are available for parametric graphs. These
tools are based on t values. For example:
1:Value displays x and y values for a specified t value.
6:Derivatives finds dy/dx, dy/dt, or dx/dt at a point
defined for a specified
t value.
Tool For Parametric Graphs:

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Texas Instruments TI-89 Titanium Specifications

General IconGeneral
Display TypeLCD
Display Resolution160 x 100 pixels
CPUMotorola 68000
CPU Speed16 MHz
RAM256 KB
Flash ROM2.7 MB
Programming LanguageTI-BASIC, Assembly
Power Source4 AAA batteries
ConnectivityI/O port
Dimensions7.5 x 3.5 x 1 inches

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