Texas Instruments TI-89 Manual Book page 478

uses methods such as L'Hopital's rule,
limit()
so there are unique limits that it cannot
determine. If
variables other than
constrain them to obtain a more concise
result.
Limits can be very sensitive to rounding
error. When possible, avoid the
setting of the
approximate numbers when computing
limits. Otherwise, limits that should be zero
or have infinite magnitude probably will not,
and limits that should have finite non-zero
magnitude might not.
Line
CATALOG
Line xStart, yStart, xEnd, yEnd[, drawMode]
Displays the Graph screen and draws, erases,
or inverts a line segment between the
window coordinates (
( ,
xEnd yEnd
If
drawMode
If
drawMode
If
drawMode
or off to on (inverts pixels along the line).
Note: Regraphing erases all drawn items. See
also
PxlLine
LineHorz
CATALOG
LineHorz y [, drawMode]
Displays the Graph screen and draws, erases,
or inverts a horizontal line at window
position
If
drawMode
If
drawMode
If
drawMode
or off to on (inverts pixels along the line).
Note: Regraphing erases all drawn items. See
also
PxlHorz
contains undefined
expression1
, you might have to
var
APPROX
mode and
Exact/Approx
,
xStart yStart
), including both endpoints.
= 1, draws the line (default).
= 0, turns off the line.
= ë 1, turns a line that is on to off
.
.
y
= 1, draws the line (default).
= 0, turns off the line.
= ë 1, turns a line that is on to off
.
limit(a^x,x,ˆ) ¸
limit(a^x,x,ˆ)|a>1 ¸
limit(a^x,x,ˆ)|a>0 and a<1
¸
In the
ZoomStd
then erase it.
Line 0,0,6,9 ¸
) and
"
TI-89:
TI-92 Plus:
Line 0,0,6,9,0 ¸
In a ZoomStd
LineHorz 2.5 ¸
Appendix A: Functions and Instructions
window, draw a line and
¥ "
window:
undef
ˆ
0
461