Texas Instruments TI-89 Manual Do Utilizador

Basic Function Graphing

 326

@x and @y are the distances from the center of one pixel to the center of an adjoining 
pixel.

Sets Window variables to their default values.
xmin = 

L

10

ymin = 

L

10

xres = 2

xmax = 10

ymax = 10

xscl = 1

yscl = 1

Sets Window variables to preset values that are often 
appropriate for graphing trig functions. Centers the origin 
and sets:

@

x = 

p

/24 

 (.130899... radians 

ymin =

 

-

4

or 7.5 degrees)   ymax = 4

xscl = 

p

/2  (1.570796... 

radians yscl 

= 

0.5

or 90 degrees)

Lets you select a new center point, and then sets 

@

x and 

@

y to 1 and sets xscl and yscl

 

to 10.

Adjusts Window variables so that all selected stat plots are 
in view.

Adjusts the viewing window to display the full range of 
dependent variable values for the selected functions. In 
function graphing, this maintains the current xmin and 
xmax and adjusts ymin and ymax.

Lets you store and recall Window variable settings so that 
you can recreate a custom viewing window.

Lets you set Zoom factors for ZoomIn and ZoomOut.