54
Graphing Chapter 4
kk
kk
k Editing Functions in Memory
uu
uu
uTo edit a function in memory
Example To change the expression in memory area Y1 from y = 2x
2
– 5
to y = 2x
2
– 3
e
(Displays cursor.)
eeeed
(Changes contents.)
w
(Stores new graph function.)
uu
uu
uTo delete a function
1. While the Graph Function Menu is on the display, press f or c to display the
cursor and move the highlighting to the area that contains the function you want
to delete.
2. Press 2 (DEL).
3. Press 1 (YES) to delete the function for 4 (NO) to abort the procedure with-
out deleting anything.
kk
kk
k Drawing a Graph
Before actually drawing a graph, you should first make the draw/non-draw status.
uu
uu
uTo specify the draw/non-draw status of a graph
You can specify which functions out of those stored in memory should be used for a
draw operation.
• Graphs for which there is no draw/non-draw status specification are not drawn.
Example To select the following functions for drawing:
Y1 : y = 2x
2
– 5
X
t 2: x = 3 sin T
Yt2: y = 3 cos T
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