Casio CFX-9970G Manuel - Page 6

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9 - 2

Analyzing a Function Graph

k k k k k Determining Points of Intersection for Two Graphs

Example

Specify Graph Y1.

• Pressing w changes " k " into "

specification of the first graph.

Specify the second graph (Graph Y3, here) to determine the points of intersection.

• Use f and c to move " k " on the

second graph.

• Intersections are found starting from the left.

• 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.

To draw the following three graphs and then determine the

points of intersection for the Graph Y1 and Graph Y3.

View Window: (A)

Y1 =

+ 1

Y2 =

(

+ 2) (

Y3 =

!5(G-Solv)

5(ISCT)

(This puts the unit into standby waiting

for selection of a graph.)

– 2)

" for

148