HP 39gII

46 Apps and their views
BuildYourOwn table keys
Besides the and menu keys, you can use
the following keys to explore the table when BuildYour
Own is active.
Example: plotting a
circle
Plot the circle, x
2
+ y
2
= 25. First rearrange it to read
.
To plot both the positive and negative y-values, use two
equations as follows:
and
1. In the Function app, specify the functions.
ISelect
Function
Sjl25
Key Meaning
Puts the highlighted independent
value (X, T, θ, or N) into the edit
line. Pressing
E
replaces this
variable with its current value.
Inserts a zero value at the position
of the highlight. Replace a zero
by typing the number you want
and pressing
E
.
Sorts the independent variable
values into ascending or
descending order. Press
and select the ascending or
descending option from the
menu, and press .
C
Deletes the highlighted row.
SCLEAR
Clears all data from the table.
y 25 x
2
–±=
y 25 x
2
–=
y 25 x
2
––=