Alternative Methods For Storing A Variable; Checking A Variable's Value; Using A Variable In A Calculation - Texas Instruments TI-NSPIRE Software Manual

This means: Calculate 5+8
num.
4. Press
Enter
Calculator creates the variable num and stores the result there.

Alternative methods for storing a variable

As alternatives to using
command. All of the following statements are equivalent.
&
3
num
5+8
3
num := 5+8
Define num=5+8

Checking a variable's value

You can check the value of an existing variable by entering its name on
the Calculator entry line.
On the Calculator entry line, type the variable name
.
Enter
The value most recently stored in

Using a variable in a calculation

After storing a value in a variable, you can use the variable name in an
expression as a substitute for the stored value.
1. Type 4*25*num^2
Calculator substitutes 517, the value currently assigned to num, and
evaluates the expression.
2. Type 4*25*nonum^2
56
3
.
&
(store), you can use "
3
on the entry line, and press
, and press
and store the result as a variable named
num
displays as the result.
.
Enter
" or the
:=
Define
num and press
.
Enter
Using Calculator