Calculator User Manual

Chapter 6: Graph Tools
103
06TOOLS.DOC TI-86, Chap 6, US English Bob Fedorisko Revised: 02/13/01 2:23 PM Printed: 02/13/01 3:01 PM Page 103 of 2206TOOLS.DOC TI-86, Chap 6, US English Bob Fedorisko Revised: 02/13/01 2:23 PM Printed: 02/13/01 3:01 PM Page 103 of 22
Clearing Drawn Pictures
To clear drawn pictures while the graph is displayed, select
CLDRW
from the
GRAPH DRAW
menu. The graph is replotted and displayed with no drawn elements.
To clear drawn pictures from the home screen, select
ClDrw
from the
CATALOG
.
ClDrw
is
pasted to the cursor location. Press
b
.
Done
is displayed; when you display the graph
again, no drawings are displayed.
The GRAPH DRAW Menu
6 / '
MATH DRAW FORMT STGDB RCGDB
Shade LINE VERT HORIZ CIRCL
4
DrawF PEN PTON PTOFF PTCHG
4
CLDRW PxOn PxOff PxChg PxTest
4
TEXT TanLn DrInv
You can use these
GRAPH DRAW
menu items only on the home screen or in the program editor.
Shade(
Shades a specified area of a graph (See page 104)
DrawF expression
Draws
expression
as a function
PxOn(row,column)
Turns on the pixel at
(row,column)
PxOff(row,column)
Turns off the pixel at
(row,column)
PxChg(row,column)
Changes the on
à
off status of the pixel at
(row,column)
PxTest(row,column)
Returns
1
if the pixel at
(row,column)
is on, or
0
if the pixel is off
TanLn(expression,x)
Draws
expression
as a function and a tangent line of
expression
at
x
DrInv expression
Draws the inverse of
expression
DrInv
is not available in
Pol
,
Param
, or
DifEq
graphing
modes.
For
PxOn
,
PxOff
,
PxChg
, and
PxTest
,
row
and
column
are
integers, where
0
row
62
and
0
column
126
.
For
DrawF
,
TanLn
, and
DrInv
,
expression
is in terms
of
x
. Also, you cannot include
a list in
expression
to draw a
family of curves.