792 Appendix A: Functions and Instructions
EndLoop See Loop, page 814.
EndPrgm See Prgm, page 828.
EndTBar See ToolBar, page 863.
EndTry See Try, page 864.
EndWhile See While, page 866.
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)
¸ 2ì
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}
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