Texas Instruments TI-Nspire, Руководство пользователя

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Using Variables 431
Using (linking) variables
Sharing, or linking, the variables you create is a powerful tool for math
exploration. The display of linked variables is automatically updated
when the variable’s value changes.
Linking to shared variables
To use a stored variable:
1. Display the page and select the location or object to which you want
to link a variable.
2. Select the Variables tool
h
.
The Variables options are displayed. The software knows which types
of variables will work in the location or with the object selected and
will only display those variables.
3. Use
9
and
:
to scroll the list, or type part of the variable name.
As you type, the system displays a list of variables that begin with the
letters you typed. Typing part of the name enables you to locate a
variable more quickly if the list is long.
4. When you locate and highlight the name of the variable you want to
use, click the name or press
·
.
The selected variable value is linked.
Linking a Lists & Spreadsheet cell to a variable
When you link a cell to a variable, Lists & Spreadsheet keeps the cell
value updated to reflect the current value of the variable. The variable
can be any variable in the current problem and can be defined in Graphs
& Geometry, Calculator, or any instance of Lists & Spreadsheet.
Note: Do not link to a system variable. Doing so could prevent the
variable from being updated by the system. System variables include
ans
,
StatMatrix
, and statistics results (such as
RegEqn
,
dfError
, and
Resid
).
1. Click the cell that you want to link to the variable.
2. Open the VarLink menu:
– Click , then click Cell .
– Handheld: Press
h
.
The VarLink menu displays.