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Chapter 20: A to Z Function and Instruction Reference
20ATOZ.DOC TI-86, Chap 20, US English Bob Fedorisko Revised: 02/13/01 2:42 PM Printed: 02/13/01 3:05 PM Page 376 of 118
ZRcl
GRAPH ZOOM menu
ZRcl
Sets the window variables to values stored previously in
the user-defined zoom-window variables, and then
updates the graph screen.
To set user-defined zoom-window variables, either:
Press 6 ( / / / & (
ZSTO
) to
store the current graph’s window variables.
– or –
Store the applicable values to the zoom-window
variables, whose names begin with
z
followed by the
regular window variable name. For example, store a
value for xMin to
zxMin
, yMin to
zyMin
, etc.
ZSqr
GRAPH ZOOM menu
ZSqr
Sets the window variable values to produce “square”
pixels where
@
x
=
@
y
, and then updates the graph screen.
The center of the current graph (not necessarily the
axes intersection) becomes the center of the new graph.
In other types of zooms, squares may look like
rectangles and circles may look like ovals. Use
ZSqr
for
a more accurate shape.
In
Func
graphing mode:
y1=
(8
2
N
x
2
):y2=
L
y1
b
Done
ZStd
b
ZSqr
b
388


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