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HP 48gx

HP 48gx
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Lesson
16:
Using
Variables
in
Calculations
The
variables
in
the
current
directory
are
conveniently
available
to
be
used
in
calculations
and
expressions.
Pressing
the
key
brings
up
a
menu
of
the
variables
in
the
current
directory.
As
with
all
menus,
the
and
@)
(PREV)
keys
allow
you
move
through
the
variables
one
“page”
at
a
time—forwards
and
backwards,
respectively.
Example:
Store
the
width
and
length
of
a
3-by-5
rectangle
in
W
and
L,
then
use
those
values
to
find
the
area.
Step
1:
Enter
and
store
the
width
and
length.
(Notice
that
can
be used
to
store
an
object
in
a
variable
without
using
the
Variable
Browser.)
Press
when
you’ve
finished
to
bring
up
the
menu
of
variables
in
the
current
directory.
CLEAR)
[IC
TS
(TT
III
|
3
@ETER)
()
@L
GTO)
5
(ENTERIC)
@W
(GTO)
VAR
Step
2:
Recall
the
two
values
to
the
stack
using
their
variable
names.
Ct
3
1:
2
CW
L
[east]
[|
|
Step
3:
Multiply
to
find
the
area.
x)
1:
13
IE
7
A
4-10
Understanding
and
Using
Memory

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