Casio SERIES FX-9860G - Manual (Page 270)

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Example Graph the two functions shown below, and determine the point of
intersection between Y1 and Y2.
Y1 = x + 1, Y2 = x 2
Use the following V-Window settings.
Xmin = –5, Xmax = 5, Xscale = 1
Ymin = –5, Ymax = 5, Yscale = 1
Procedure
1 m GRAPH
!3 (V-WIN) - f w f w b w c
- f w f w b wJ
3 (TYPE)1 (Y=) v +b w
vxw
6 (DRAW)
2 !5 (G-SLV)5 (ISCT)
6 e
Result Screen
……
5-11-12
Function Analysis
# In the case of two graphs, the point of
intersection is calculated immediately after
you press
!55 in step 2.
# You can calculate the point of intersection for
rectangular coordinate graphs and inequality
graphs only.
# Either of the following can cause poor accuracy or
even make it impossible to obtain solutions.
• When a solution is a point of tangency
between two graphs
• When a solution is an infl ection point