Sharp EL-9900 Operation Manual page 32

Chapter 2: Operating the Graphing Calculator
Note:
+
,
R
r
z
22
If a number precedes d b a and _, then the
number will be set as the first entry of the figure. Else, the first
entry is blank and the cursor flashes.
Examples
2 d 3 }
4 '
d
; 2 ' 3 } 4 '
Enters a "root" figure at the cursor
Enters " , " (a comma) at the cursor
Stores a number or a formula into a variable
Recalls an item stored in a variable
Brings up the VARS menu.