Casio fx9750GII Getting Started page 23

Example cont.
F5 for ISCT (intersection points)
to find all others
Solving trigonometric equations
It is necessary to check that the domain (x-coordinates) and range (y-coordinates) are set up for graphing trigonometric
graphs, through the V-Window ( [SHIFT] [F3]).
By pressing the [F2] key this sets the calculator up for
TRIGonometric graphs. You can alter the settings by
overriding what is already there.
Example
Solve sin x = 0.5 between 0º ≤ x ≤ 360º
sin
then
X, θ ,T
F3
then
SHIFT
EXIT then EXE
EXIT
into Y2
then 0 .
EXE F6
or to draw both graphs
F5
then
SHIFT
for G-Solve (solves the two graphs simultaneously)
Search for the next solution
The two solutions are x = 30o and 150o
Solving 'X=...' equations.
x = y entry rather than y = x in GRAPH mode.
Selecting TYPE [F3] gives you access to a number
of different graph types that can be drawn.
Note:
That the Graph Function at the top
of the screen changes to : X=
To enter in 'Y' use the [ALPHA] key
and then the [ — ] key
EXE
F2
Set up for TRIG graphs
or F6 to draw the sine curve
5 and EXE to store
F5
KEY
Result
For "X ="
fx9750GII
Use this
V-Window.
CHAPTER 2 | PG 23