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HP HP-25 User Manual

HP HP-25
131 pages
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For
example,
you
could
work
the
problem
above
by
beginning
at
the
left
side
of
the
equation
and
simply
working
through
it
in
left-to-right
order.
All
problems
cannot
be
solved
using
left-to-
right
order,
however,
and
the
best
order
for
solving
any
prob-
lem
is
to
begin
with
the
innermost
parentheses
and
work
out-
ward.
So,
to
solve
the
problem
above:
Press
Display
;
4
=]
Intermediate
answer
for
(3
+
4).
5
[5
2
(2
=]
Intermediate
answer
for
(5
+
2).
=
Intermediate
answer
for
B+4)-(05+2).
4
3
Intermediate
answer
for
(4
X
3)
Intermediate
answer
for
(G+4)—(5+2)+(4x3).
s
3
20
Intermediate
answer
for
(3
x
.213).
g
5
5.
Thefirstnumberis
keyed
in.
The
final
answer.
Constant
Arithmetic
You
may
have
noticed
that
whenever
the
stack
drops
because
of
a
two-number
operation
(not
because
of
[
),
the
number
in
the
T-register
is
reproduced
there.
This
stack
operation
can
be
used
to
insert
a
constant
into
a
problem.

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HP HP-25 Specifications

General IconGeneral
BrandHP
ModelHP-25
CategoryCalculator
LanguageEnglish

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