Zdecimal, Zsquare – Texas Instruments TI-84 User Manual

Page 124

Chapter 3: Function Graphing

121

•

To zoom in at the same point, press

Í.

•

To zoom in at a new point, move the cursor to the point that you want as the
center of the new viewing window, and then press

Í.

To zoom out on a graph, select

3:Zoom Out

and repeat steps 3 through 5.

To cancel

Zoom In

Zoom Out

, press

‘.

ZDecimal

ZDecimal

replots the functions immediately. It updates the window variables to preset

values, as shown below. These values set

and

equal to 0.1 and set the X and Y

value of each pixel to one decimal place.

ZSquare

ZSquare

replots the functions immediately. It redefines the viewing window based on the

current values of the window variables. It adjusts in only one direction so that

which makes the graph of a circle look like a circle.

Xscl

and

Yscl

remain unchanged.

The midpoint of the current graph (not the intersection of the axes) becomes the
midpoint of the new graph.

Xmin=

4.7

Xmax=4.7
Xscl=1

Ymin=

3.1

Ymax=3.1
Yscl=1