HP 39G

Function aplet 3-11
Plotting a piecewise defined function example
Suppose you wanted to graph the following piecewise defined
function.
1. Open the Function aplet.
>$3/(7@ Select
Function
67$57a
2. Highlight the line you want to use, and enter the
expression. (You can press >'(/@ to delete an existing
line, or >6+,)7@CLEAR to clear all lines.)
>@
;a >@ 2 >@ >j@
>@
;a >6+,)7@ CHARS ≤
>@ 1 >@>(17(5@
;a >[@ >j@>@ ;a
>6+,)7@
CHARS > >@1
>6+,)7@
AND ;a
>6+,)7@CHARS ≤ 1 >@ >(17(5@
>@4 > @
;a >@>j@>@ ;a
>6+,)7@
CHARS > 1 >@>(17(5@
Note: You can use the ;a
menu key to assist in the
entry of equations. It has
the same effect as
pressing >;75@.
f
x()
x 2 x 1–≤;+
x
2
1– x 1≤<;
4 xx1≥;–





=