Drawing A Logarithmic Graph; Trigonometric Functions; Degrees And Radians - Casio fx-9860GII Instructions Manual

1.17 Drawing a logarithmic graph

Example 20
Draw the graph of y = 2log
Press MENU . You will see the dialog box as shown on the right.
Choose 5: GRAPH and press
Type 2log(x) + 3 and press
Press SHIF T F3 V-Window and choose
axes which are −10 ≤ x ≤ 10 and −10 ≤ y ≤ 10.
EXE F6
Press and DRAW.
The graphs of y = 10y = 2log
Change the axes to make the logarithmic curve fi t the screen better.
For help with changing
axes, see your GDC
manual.

Trigonometric functions

1.18 Degrees and radians

Work in trigonometry will be carried out either in degrees or radians. It is important, therefore,
to be able to check which mode the calculator is in and to be able to switch back and forth.
Example 21
Change angle settings from radians to degrees and from degrees to radians.
Press SHIF T SET UP.
Select either Deg or Rad using
EXE
Press .
© Oxford University Press 2012: this may be reproduced for class use solely for the purchaser's institute
x + 3.
10
EXE
.
Press
EXE
.
F3 STD for the default
x
x + 3 is displayed with the default axes.
10
F1
or F2 .
Casio fx-9860GII
log
2 X,i,T + 3
Using a graphic display calculator 22