Texas Instruments TINSPIRE Manual Book page 446

• Characters can consist of letters, digits, and the underscore character
(_). Letters can be U.S. or Greek letters (but not Π or p), accented
letters, and international letters.
• Do not use
c
name such as
treated internally as special symbols.
You can use uppercase or lowercase letters. The names AB22, Ab22,
•
aB22, and ab22 all refer to the same variable.
You cannot use a digit as the first character of xxx or yyy.
•
• Do not use spaces.
• If you want a variable to be treated as a complex number, use an
underscore as the last character of the name.
CAS: If you want a variable to be treated as a type of unit (such as _m
•
or _ft), use an underscore as the first character of the name. You
cannot use subsequent underscores in the name.
• You cannot use an underscore as the first character of the name.
• You cannot use a preassigned variable, function, or command name,
such as ,
Ans
Note: For a complete list of TI-Nspire™ functions, refer to the
Reference Guide.
• Library documents and library objects are subject to additional
naming restrictions. For details, see the "Libraries" section of the
documentation.
Here are some examples:
Variable names
Myvar, my.var
My var, list 1
a, b, c
Log, Ans
Log1, list1.a, list1.b
3rdTotal, list1.1
434 Using Variables
or from the symbol palette to construct a variable
n
or . These may appear to be letters, but they are
c1 n12
, or .
min tan
Valid?
Yes
No. Contains a space.
Yes
No. Preassigned to a system function or variable.
Yes
No. xxx or yyy starts with a digit.