User's Manual

CATALOG, Strings, Hyperbolic Functions 15-7
8315CATS.DOC TI-83 international English Bob Fedorisko Revised: 02/19/01 12:54 PM Printed: 02/19/01 1:39
PM Page 7 of 10
Equ
4
String( converts to a string an equation that is stored
to any
VARS Y
.
VARS
variable. Y
n
contains the equation.
Str
n
(from
Str1 to Str9, or Str0) is the string variable to
which you want the equation to be stored as a string.
Equ
4
String(Y
n
,Str
n
)
expr( converts the character string contained in
string
to
an expression and executes it.
string
can be a string or a
string variable.
expr(
string
)
inString( returns the character position in
string
of the first
character of
substring
.
string
can be a string or a string
variable.
start
is an optional character position at which to
start the search; the default is 1.
inString(
string
,
substring
[
,
start
]
)
Note:
If
string
does not contain
substring
, or
start
is greater than the
length of
string
,
inString(
returns
0
.
Equ
4
String(
expr(
inString(