Texas Instruments Titanium TI-89, User Manual

Page: 296 / 977

Basic Function Graphing 293
The function list now shows the new function, which is automatically selected for
graphing.
Note:
If you accidentally move the cursor to the entry line, press
N
to move it back to
the function list.
Editing a Function
From the Y= Editor:
1. Press
D
and
C
to highlight the function.
2. Press
¸
or
…
to move the cursor to the entry line.
3. Do any of the following:
• Use
B
and
A
to move the cursor within the expression and edit it. Refer to
“Editing an Expression in the Entry Line” in Operating the Calculator .
– or –
• Press
M
once or twice to clear the old expression, and then type the new
one.
4. Press
¸
.
The function list now shows the edited function, which is automatically selected for
graphing.
Note:
To cancel any editing changes, press
N
instead of
¸
.