Texas Instruments NS/CLM/1L1/B - NSpire Math And Science Handheld Graphing Calculator, Руководство пользователя

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Working with Documents 49
• To refer to a table column (such as A) without conflicting with a
single-letter variable name
A
, follow the column letter with a pair of
brackets (A[]).
Checking a variable’s value using the Calculator
application
You can check the value of an existing variable by entering its name on
the Calculator entry line.
f
On the Calculator entry line, type the variable name
num
and press
·
.
The value most recently stored in num is displayed as the result.
Using (linking) TI-Nspire™ 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.
In the following two examples, two data lists were created in Lists &
Spreadsheet and then plotted in Graphs & Geometry.
Use this
syntax:
To refer to: Remarks
myvar The shared variable
myvar
.
No special syntax needed, because
this name does not conflict with a
cell or column reference.
A1 The table cell at
column A, row 1. This syntax always refers to table
cell A1—never to variable
A1
.
‘A1 The shared variable
A1
. The apostrophe makes this a
reference to variable
A1
—never to
table cell A1.
A The shared variable
A
. This syntax never refers to column
A.
A[] Column A of the
current table. Brackets make this a reference to
column A—never to variable
A
.