Casio fx-9860GII Instructions Manual page 14

EXE F6
Press to view the table.
F5
Press G·CON to display the graph alongside the table.
OPTN F2
Press GLINK.
When you scroll through the table the cross moves along the curve.
The minimum value shown in the table is –2 when x = 1 and x = 2.
Look more closely at the values of the function around x = 1 and x = 2.
SHIF T
Press F3 V-Window.
Choose values 1 ≤ x ≤ 2 and −2.5 ≤ y ≤ −1.5 and press
Change the settings in the table: Press
Set Start to 0.9
End to 1.1
Step to 0.01
EXE F6
Press to view the graph and the table.
Press F5 G·CON to display the graph alongside the table.
OPTN F2
Press GLINK and scroll through the table.
The table shows that the function has larger values at points around (1.5,
–1.75). We can conclude that this is a local maximum on the curve.
Method 2 – Using the maximum function
F5
Press G-Solv F3 MIN.
© Oxford University Press 2012: this may be reproduced for class use solely for the purchaser's institute
EXE .
F1 F5 SET.
Casio fx-9860GII
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Continued on next page
Using a graphic display calculator 14