Texas Instruments TI-82 STATS Manual Book page 295

Equ4String(
expr(
inString(
converts to a string an equation that is stored to any
Equ4String(
variable.
VARS Y.VARS
to , or
Str1 Str9 Str0
equation to be stored as a string.
n
Equ4String(Y ,Str
converts the character string contained in string to an
expr(
expression and executes it. string can be a string or a string
variable.
string
expr( )
returns the character position in string of the first
inString(
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.
string substring[
inString( ,
Note: If string does not contain substring, or start is greater than the
inString(
length of string,
CATALOG
n contains the equation.
Y
) is the string variable to which you want the
n
)
start]
, )
0
returns .
, Strings, Hyperbolic Functions 15–7
n (from
Str