Texas Instruments TI-89 Titanium Short User Manual page 189

entry()
CATALOG
entry() ⇒
) ⇒
integer
entry(
Returns a previous entry-line entry from the
Home screen history area.
integer
expression in the history area. The default is 1,
the most recently evaluated entry. Valid range is
from 1 to 99 and cannot be an expression.
Note: If the last entry is still highlighted on the
Home screen, pressing ¸ is equivalent to
executing
exact()
MATH/Number menu
expression1
exact(
list1
exact( [,
matrix1
exact(
Uses
Exact
Exact/Approx
possible, the rational-number equivalent of the
argument.
specifies the tolerance for the conversion; the
tol
default is 0 (zero).
Exec
CATALOG
string
Exec [,
Executes a
68000 op-codes. These codes act as a form of an
assembly-language program. If needed, the
optional
arguments to the program.
For more information, check the TI Web site:
http://www.ti.com/calc
Warning:
power of the microprocessor. Please be aware
that you can easily make a mistake that locks up
the calculator and causes you to lose your data.
We suggest you make a backup of the calculator
contents before attempting to use the
command.
Appendix A: Functions and Instructions
expression
expression
, if included, specifies which entry
.
entry(1)
]) ⇒
tol expression
[,
]) ⇒
tol list
]) ⇒
tol matrix
[,
mode arithmetic regardless of the
mode setting to return, when
expression1 expression2
] [,
consisting of a series of Motorola
string
let you pass one or more
expressions
gives you access to the full
Exec
On the Home screen:
1+1/x ¸
1+1/entry(1) ¸
¸
¸
entry(4) ¸
exact(.25) ¸
exact(.333333) ¸
exact(.33333,.001)
exact(3.5x+y) ¸
exact({.2,.33,4.125}) ¸
] ...
Exec
1
x + 1
1
2 ì
x+1
1
ø (2ø x+1) + 3/2
2
1
5 / 3 ì
3ø (3ø x+2)
1
x + 1
1/4
333333
1000000
1/3
7ø x
+ y
2
33
{ }
1à5 33à8
100
183