Example: Plotting A Circle - HP 39G User Manual

Example: plotting a circle

2-20
2 2
Plot the circle, x + y = 9. First rearrange it to read
2
y = 9 x – .
To plot both the positive and negative y values, you need to
define two equations as follows:
2
y = 9 x – and y = –
1. In the Function aplet, specify the functions.
Select
Function
9
9
2. Reset the graph setup to the default settings.
-
SETUP PLOT
CLEAR
3. Plot the two functions
and hide the menu so that
you can see all the circle.
4. Reset the numeric setup to the default settings.
-
SETUP NUM
CLEAR
5. Display the functions in numeric form.
2
9 x –
Aplets and their views