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3-18 Function Graphing

8203FUNC.DOC TI-82, Chapter 3, English Bob Fedorisko Revised: 02/09/01 9:06 AM Printed: 02/09/01

12:36 PM Page 18 of 24

ZDecimal

replots the functions immediately, updating the

WINDOW

variables to preset values that set

and

equal to

and defining the

and

value of each pixel as one decimal.

Xmin =

4.7 Ymin =

3.1

Xmax = 4.7 Ymax = 3.1

Xscl = 1 Yscl = 1

ZSquare

replots the functions immediately, redefining the

WINDOW

based

on the current

WINDOW

variables, but adjusted in only one direction so

that

. This 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.

ZStandard

replots the functions immediately, updating the

WINDOW

variables to the standard values:

Xmin =

10 Ymin =

Xmax = 10 Ymax = 10

Xscl = 1 Yscl = 1

ZTrig

replots the functions immediately, updating the

WINDOW

variables to

preset values appropriate for trig plotting functions. In

Radian

MODE

these

are:

Xmin =

(47

24)

Ymin =

Xmax = (47

24)

Ymax = 4

Xscl =

/2 Yscl = 1

ZInteger

redefines the viewing

WINDOW

X=1

and

Y=1

Xscl=10

, and

Yscl=10

, replotting the functions after you move the cursor to the point that

you want as the center of the new

WINDOW

and press

ZoomStat

redefines the viewing

WINDOW

so that all statistical data points

are displayed. For one-variable plots (histograms and box plots), only

Xmin

and

Xmax

are adjusted. If the top of the histogram is not shown, use

TRACE

to determine the value for

Ymax