148
k
k
k
k
k
Determining Points of Intersection for Two Graphs
Example
To draw the following three graphs and then determine the
points of intersection for the Graph Y1 and Graph Y3.
View Window:
(A)
Y1 =
x
+ 1
Y2 =
x
(
x
+ 2) (
x
– 2)
Y3 =
x
2
!5
(G-Solv)
5
(ISCT)
(This puts the unit into standby waiting
for selection of a graph.)
Specify Graph Y1.
w
• Pressing
w
changes “
k
” into “
◆
” for
specification of the first graph.
Specify the second graph (Graph Y3, here) to determine the points of intersection.
c
w
• Use
f
and
c
to move “
k
” on the
second graph.
• Intersections are found starting from the left.
e
• The next intersection to the right is found. If
there is no intersection to the right, nothing
happens when you perform this operation.
• You can use
d
to move back to the left.
• If there are only two graphs, pressing
5
(ISCT) directly displays the intersec-
tions (selection of the graph is not required).
• Note that the above operation can be performed on rectangular coordinate (Y=)
and inequality graphs only.
9 - 2
Analyzing a Function Graph
Summary of Contents for CFX-9850G PLUS
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