Texas Instruments TI-Nspire CX CAS TINSPIRE-CX-CAS 产品宣传页
产品代码
TINSPIRE-CX-CAS
Controlling the Form of a Result
You might expect to see a decimal result instead of 2752 ⁄ 3 in the preceding
example. A close decimal equivalent is 917.33333..., but that’s only an
approximation.
example. A close decimal equivalent is 917.33333..., but that’s only an
approximation.
By default, Calculator retains the more precise form: 2752 ⁄ 3. Any result that is
not a whole number is shown in a fractional or (CAS) symbolic form. This
reduces rounding errors that could be introduced by intermediate results in
chained calculations.
not a whole number is shown in a fractional or (CAS) symbolic form. This
reduces rounding errors that could be introduced by intermediate results in
chained calculations.
You can force a decimal approximation in a result:
•
By pressing shortcut keys.
Windows®: Press
Ctrl
+
Enter
to evaluate the expression.
Mac®: Press “+
Enter
to evaluate the expression.
Handheld: Press
/ ·
instead of
·
to evaluate the expression.
Pressing
/ ·
forces the approximate result.
•
By including a decimal in the expression (for example, 43. instead of 43).
•
By wrapping the expression in the
approx()
function.
•
By changing the document’s
Auto or Approximate
mode setting to
Approximate.
From the
File
menu, click
Settings
>
Document Settings
.
Handheld: Press
~
to display the
File
menu.
Note that this method forces all results in all of the document’s problems to
approximate.
Calculator Application
147