Casio fx-9860GII Instructions Manual page 12

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.
Look more closely at the values of the function around x = 1.
SHIF T F3
Press V-Window.
Choose values −0.9 ≤ x ≤ 1.1 and 1.99 ≤ y ≤ 2.01 and press
Change the settings in the table: Press
Set Start to 0.9
End to 1.1
to 0.01
Press EXE F6 to view the graph and the table.
F5
Press G·CON to display the graph alongside the table.
Press OPTN F2 GLINK and scroll through the table.
The table shows that the function has larger values at points around (1, 2).
We can conclude that this is a local minimum on the curve.
Method 2 – Using the minimum function
F3
Press F5 G-Solv MIN.
The calculator displays the minimum point on the curve at (1, 2).
© Oxford University Press 2012: this may be reproduced for class use solely for the purchaser's institute
EXE
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F1 F5
SET.
Casio fx-9860GII
Using a graphic display calculator 12