Texas Instruments TITANIUM TI-89 - Manual (Page 472)

Additional Graphing Topics 472
Copying from the Home Screen to the Y= Editor Copying from the Home Screen to the Y= Editor Copying from the Home Screen to the Y= Editor Copying from the Home Screen to the Y= Editor
If you have an expression on the Home screen, you can use any of the following
methods to copy it to the Y= Editor.
Method Description
Copy and
paste 1. Highlight the expression on the Home screen. Press
ƒ
and select 5:Copy.
2. Display the Y= Editor, highlight the desired function, and
press
¸
.
3. Press
ƒ
and select 6:Paste. Then press
¸
.
Note: Instead of using
ƒ
5 or
ƒ
6 to copy and paste,
use:
8 6
or
8 7
§ Store the expression to a Y= function name.
Note: To copy an expression from the Home screen’s
history area to the entry line, use the auto-paste feature or
copy and paste.
Define
command Define the expression as a user-defined Y= function.
Note: Define is available from the Home screen’s
†
toolbar menu.
2x^3+3x^2 N 4x+12
!
y1(x)
Use the complete function
name: y1(x), not just y1.
Define y1(x)=2x^3+3x^2 N 4x+12