Updating A Variable; Types Of Variables; Entering Multiple Statements On The Entry Line - Texas Instruments TI-NSPIRE Software Manual

Because the variable nonum has not been defined, it is treated
algebraically in the result.

Updating a variable

If you want to update a variable with the result of a calculation, you
must store the result explicitly.
Entry
a := 2
a 3
a
3
a := a
a
2
&
a a
a

Types of variables

You can store the following TI-Nspire™ math and science learning
technology data types as variables:
Data type
Expression
List
Matrix
Character string
Function

Entering multiple statements on the entry line

To enter several statements on a single line, separate them with a colon
(":"). Only the result of the last expression is shown.
Using Calculator
Result Comment
2
Result not stored in variable a.
8
2
Variable a updated with result.
8
8
Variable a updated with result.
64
64
Examples
2.54 1.25E6
{2, 4, 6, 8}
1 2 3
This can be entered as:
3 6 9
"Hello"
myfunc(arg)
2p 2+3i (xN2)
{1, 1, 2}
"xmin/10"
ellipse(x, y, r1, r2)
2
2
/2
[1,2,3;3,6,9]
"The answer is:"
57