HP HP-28S - Page 70

I
Return
the
expression
stored
in
EQI
to
the
stack.
~------------------~-==
IUSER!
EQl
2:
16.25
1:
'
Rl
+
INVC
INVCR2) +
INVC
R3»'
IIiDllimmm
__
_
Return
the
expression to
the
command
line
.
•
(EDIT!
The
expression
in
level 1
appears
in
inverse
characters to
warn
you
that
it will
be
replaced
by
the
contents
of
the
command
line.
The
alpha
annunciator
a
appears,
indicating
that
alpha
entry
mode
is
active.
Now
edit
the
expression to
represent
the
formula:
Move
the
cursor to
the
lower
row
of
the
command
line. (The
opera-
tions for
moving
the
cursor
are
on
the
cursor
menu-the
labels
printed
in
white
just
above
the
menu
keys.)
[YJ
The
cursor
menu
is active
whenever
the
command
line
exists
and
no
menu
is displayed.
You
can
turn
the
cursor
menu
on
and
off
by
press-
ing
~.
Pressing
.(
EDIT!
automatically
turns
on
the
cursor
menu.
Move
the
cursor
just
past
the
term
for R3.
[E[E[E
4:
Repeating
Calculations
69