Casio fx-4200P

@
Auto
Power
OFF
Function
This
unit
automatically
switches
OFF
if
not
operated
for
approximately
6
minutes.
Power
can
be
restored
by
pressing
the
&3
key.
Memory
contents
and
mode
setting
are
retained
even
when
power
is
switched
off.
5/Helpful
Hints
for
Easier
Calculations
The
information
given
in
this
section
should
help
you
to
understand
the
internal
workings
of
the
calculator,
so
you
can
enter
data
in
the
most
efficient
manner.
m@
Order
of
Operations
Operations
are
performed
in
the
following
order
of
precedence:
@
Coordinate
conversions
Pol
(x,
y),
Rec
(7,
8)
(Type A functions
These
functions
are
those
in
which
the
value
is
entered
and
then
the
function
key
is
pressed.
x2,
x71,
x1,
°"
"|
engineering
symbols
@ Power, root
x:
@
x,
memory,
abbreviated
multiplication
format
(see
page
21)
immediately
before
variables.
2n,41K
1,
5A,
rR...
Type B functions
These
functions
are
those
in
which
the
function
key
is
pressed
and
then
the
value
is
entered.
¥,¥,
log,
In,
e*,
10%,
sin,
cos,
tan,
sin7’,
cos’,
tan7',
sinh,
cosh,
tanh,
sinh’,
cosh7',
tanh7',
(—),
(),
d,
h,
b,
0,
Neg,
Not
:
©
Abbreviated
multiplication
format
(see
page
21)
immediately
before
Type
B
functions.
2V3,
A
loge
...
Permutation,
combination
nPr,
nCr
@®x, +
@® and
~
|
BASE-N
mode
only.
@jor, xor, xnor
*When
multiple
functions
are
of
the
same
precedence,
they
are
performed
from
right
to
left,
Normal
calculations
are
performed
from
left
to
right.
“Complex
functions
are
performed
from
right
to
left.
*Terms
contained
in
parentheses
receive
the
highest
precedence.
i
H
|
i
\
i
:
24+3x
(log
sin2x’
rad
+
6.8)
=
22.07101691
@ About Stacks
A
stack
is
an
area
of
memory
used
to
temporarily
store
data.
If
you
visualize
the
memory
as
a
series
of
boxes
piled
vertically,
you
can
see
how
such
an
area
came
to
be
called
a
stack.
When
your
calculator
processes
a
calculation,
it
divides
its
contents
into
two
different
stacks:
a
numeric
stack
for
values,
and
a
command
stack
for
commands.
The
numeric
stack
has
a
capacity
of
eight
levels
(boxes),
while
the
capacity
of
the
command
stack
is
16
levels,
A
stack
overflow
error
(indicated
by
Stk
ERROR
on
the
display)
will
occur
if
your
calculation
exceeds
these
limitations.
The
following
example
shows
how
the
calculator
assigns
values
and
commands
to
their
respective
stacks:
2x
((3+4xX
(5+4)
+3)
+5)
+8=
bt
old]
lote
vas @ Be @
Numeric
stack
Command
stack
®
2
i
x
|
®
|
3
|
alc
|
®
|
4
(3
(
ieee
T
@®
|
5
@
|)
+
®
4
»
(5)
x
6 (
{2 +
*The
calculation
is
performed
in
accordance
with
the
order
of
precedence
described
in
the
preceding
section.
Once
a
calculation
is
performed,
the
stacks
are
cleared.