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HP HP-18C - Entering Formulas

HP HP-18C
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The
SOLVE
menu
shows
the
operations
you
can
do
with
the
formula
list. Table 9-1 briefly describes
these
operations.
Table
9-1_
SOLVE Menu Keys
Menu
Key
Description
B1B
Displays
the custom
menu
for
the current
formula
.
IDII
Allows
you
to
change a
formula
after
it
has been entered;
also allows
you
to
view
an
entire
formula
that
is
longer than
22 characters.
IDDiI
Displays
the
DELET
menu,
which
is
used
to
delete the cur-
rent
formula
and/or its user-variables.
Entering Formulas
To
enter
a
formula
into
the
formula
list,
starting
from
the
MAIN
menu:
1 • Press
eiIIII
.
2.
If
the
list is empty, go to
step
3.
If
the
list
already
contains
one
or
more
formulas, press .
0*
to
move
the
list
pointer
to
the
bot-
tom
of
the
formula
list.
3.
Type
the
formula.
There
is
no
limit
on
the
length
of
the
formula.
When
a line is full, it rolls
up
to
make
room
for
another
line
of
characters.
If
you
make
a
typing
mistake,
use
the
alphabetic
editing
keys. (The
alphabetic
editing
keys are
covered
on
pages
23
and
24.)
4.
Do a
or
b:
a. Press
B1B
to
enter
the
formulas
and
display
the
custom
menu.
The
first 22 characters
of
current
formula
is
at
the
top
of
the
display.
b. Press 1 INPUT
I.
The
cursor
disappears
and
line 3
displays
the
list
pointer
and
the
first 22 characters of
the
formula.
If
you
want
to
enter
another
formula,
return
to
step
3.
*
If
you skip this step,
the
new
formula is
inserted
after
the
current
formula.
130
9:
The
Formula
Solver

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