Casio FX-7400GII - SOFTWARE VERSION 2-00 User Manual page 23

Using Undoing and Redoing Operations
You can use the following procedures during calculation expression input in the Math input/
output mode (up until you press the
key operation you have just undone.
- To undo the last key operation, press:
- To redo a key operation you have just undone, press:
• You also can use UNDO to cancel an
expression you have input, pressing
before you pressed
• You also can use UNDO to cancel a cursor key operation. If you press
then press
• The UNDO operation is disabled while the keyboard is alpha-locked. Pressing
(UNDO) while the keyboard is alpha-locked will perform the same delete operation
as the key alone.
Example
Math Input/Output Mode Calculation Result Display
Fractions, matrices, and lists produced by Math input/output mode calculations are displayed
in natural format, just as they appear in your textbook.
• Fractions are displayed either as improper fractions or mixed fractions, depending on the
"Frac Result" setting on the Setup screen. For details, see "Using the Setup Screen" (page
1-26).
key) to undo the last key operation and to redo the
.
(UNDO), the cursor will return to where it was before you pressed
(UNDO)
(UNDO)
Sample Calculation Result Displays
(UNDO).
(UNDO) again.
key operation. After pressing
(UNDO) will restore what was on the display
1-16
to clear an
during input and
.