Sharp el-9950

114
Chapter 4: Graphing Features
IfindependentmemoriesAtoCcontainanynumericvalues,
the graph is drawn based on these values.
*Iftheequation(inthisexample,Y1)onwhichthecursoris
located contains no variables, the substitution feature screen
will not appear.
2. Press2
E
.
(2isinputtoA.)
Thegraphfor“Y1=2X
2
”is
drawn.(SinceBandChave
no values, they are ignored.)
Atthistime,thegraphfor
Y2isalsodrawn.Y2alsousesvariableAwhichisusedinY1.
Therefore,thedrawingofthegraphforY2isalsovalid.
*IfyouneedtodrawonlythegraphforY2,itisnecessaryto
change variables (characters) or make the graph drawing for
Y1invalid.
3. Press1
E
.
(1 is input to B.)
The graph is changed from
“Y1=2X
2
”to“Y1=2X
2
+
1X”.
4. Press
_
3
E
.
(
-
3isinputtoC.)
Now,thegraphfor“Y1=2X
2
+
1X
–
3”isdrawnonthe
screen.