Texas Instruments TI-84 Plus Guide Book

Chapter 15: CATALOG, Strings, Hyperbolic Functions 419
expr(
expr(expr(
expr(
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(
inString(inString(
inString(
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.

Texas Instruments TI-84 Plus Specifications

General

Battery type	AAA
Power source	Battery
Number of batteries supported	4
Type	Graphing
Cover	No
Form factor	Pocket
Control type	Buttons
Product color	Black
USB port	Yes
USB 2.0 ports quantity	1
Digits	- digits
Display number of lines	8 lines
Display number of characters	16
RAM capacity	0.024 MB
ROM capacity	0.480 MB
Storage media type	-