Appendix A: Functions and Instructions 815
EndLoop See Loop, page 839.
EndPrgm See Prgm, page 854.
EndTBar See ToolBar, page 890.
EndTry See Try, page 890.
EndWhile See While, page 893.
entry() CATALOG
entry() ⇒
⇒⇒
⇒
expression
entry(
integer
) ⇒
⇒⇒
⇒
expression
Returns a previous entry-line entry from the
Home screen history area.
integer
, if included, specifies which entry
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
entry(1).
On the Home screen:
1+1/x ¸
1
x
+ 1
1+1/entry(1)
¸ 2 ì
1
x+1
¸
1
2ø (2ø x+1)
+ 3/2
¸ 5/3ì
1
3ø (3ø x+2)
entry(4)
¸
1
x
+ 1
exact() MATH/Number menu
exact(
expression1
[,
tol
]) ⇒
⇒⇒
⇒
expression
exact(
list1
[,
tol
]) ⇒
⇒⇒
⇒
list
exact(
matrix1
[,
tol
]) ⇒
⇒⇒
⇒
matrix
Uses Exact mode arithmetic regardless of the
Exact/Approx mode setting to return, when
possible, the rational-number equivalent of the
argument.
tol
specifies the tolerance for the conversion; the
default is 0 (zero).
exact(.25) ¸ 1/4
exact(.333333)
¸
333333
1000000
exact(.33333,.001) 1/3
exact(3.5x+y)
¸
7ø x
2
+ y
exact({.2,.33,4.125})
¸
{1à5
33
100
33à8}
Exec CATALOG
Exec
string
[,
expression1
] [,
expression2
] ...
Executes a
string
consisting of a series of Motorola
68000 op-codes. These codes act as a form of an
assembly-language program. If needed, the
optional
expressions
let you pass one or more
arguments to the program.
For more information, check the TI Web site:
http://www.ti.com/calc
Warning: Exec gives you access to the full
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
Exec
command.
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