Texas Instruments Derive 5 Introduction Manual page 19

14
This is another "beautiful" result. Before computing an approximation, add an appropriate
comment to the worksheet in form of a text object.
Insert a text object with the
The following is an approximation of sin(pi/4)
(Try to) conclude the input with (¢).
The 'Enter' key, used from within text editing mode, added an extra line to the text object. This
is not what was intended.
Delete the extra line using the backspace key (æ_).
Note that while D
ERIVE
commands as you can see in the Command Toolbar. The inaccessible buttons and menu
commands appear dimmed. For example, the
mode now, because a text object is highlighted.
You need to highlight an expression before you can approximate it.
Highlight expression #24, then approximate it with
Other than the Command Toolbar's
invokes a dialog box in which you are asked to specify the number of digits of precision. The
currently displayed default value of 10 digits is also used by the
Simplify>Approximate
computation. Change the number to 35, then use the default dialog exit.
35 (_Approximate_)
Insert>Text Object
is in text editing mode, you have no access to certain buttons and menu
Approximate
command allows you to temporarily change the default value for the next
command, then type:
Approximate button is not available in text editing
Simplify>Approximate
button, the Simplify>Approximate
Approximate
Chapter 1: First Steps
.
command
button. The