Texas Instruments TI-89 Manual Book page 460

EndCustm
See Custom, page 429.
EndDlog
See Dialog, page 437.
EndFor
See For, page 450.
EndFunc
See Func, page 451.
EndIf
See If, page 456.
EndLoop
See Loop, page 466.
EndPrgm
See Prgm, page 481.
EndTBar
See ToolBar, page 515.
EndTry
See Try, page 515.
EndWhile
See While, page 518.
entry()
CATALOG
entry() expression
entry(integer)
Returns a previous entry-line entry from the
Home screen history area.
, if included, specifies which entry
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
exact(expression1 [, tol])
exact(list1 [, tol])
exact(matrix1 [, tol])
Uses
Exact
Exact/Approx
possible, the rational-number equivalent of
the argument.
specifies the tolerance for the conversion;
tol
the default is 0 (zero).
expression
.
entry(1)
expression
list
matrix
mode arithmetic regardless of the
mode setting to return, when
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}) ¸
Appendix A: Functions and Instructions
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
2 + y
33
{ }
1à5 100 33à8
443