Drawing Trigonometric Graphs - Casio fx-9860GII Instructions Manual

1.19 Drawing trigonometric graphs

Example 22
Draw the graph of y 2sin
Press MENU . You will see the dialog box as shown on the right.
Choose 5: GRAPH and press
2sin x 1
Type and press
6
SHIF T F3
Press V-Window and choose
which are −9.42 ≤ x ≤ 9.42 and −1.6 ≤ y ≤ 1.6.
EXE
Press and F6 DRAW.
The GDC displays the graph of
Change the y-axis to make the trigonometric curve fi t the screen better.
© Oxford University Press 2012: this may be reproduced for class use solely for the purchaser's institute
x 1 .
6
EXE
.
EXE
.
Press
F2
TRIG for the default axes
y 2sin x 1 .
6
Casio fx-9860GII
2 log X,i,T + 3
9.42 ≈ 3π
Using a graphic display calculator 23