Casio fx-4200P

12/Using
Variabies
in
Calculations
A
total
of
26
variables
are
available.
Each
variable
has
a
name,
represented
by
the
26
letters
of
the
alphabet
from
A
through
Z.
;
:
*Though
there
are
26
variables
available,
you
can
only
use
eight
in
any
single
caicula-
tion.
Even
if
you
connect
a
number
of
formulas
together
into
a
multistatement
(see
page
28),
you
are
only
allowed
eight
variabies.
If
you
try
to
use
more
than
eight,
you
will
get
a
Mem
ERROR
(memory
error)
message.
/
:
«When
you
execute
a
formula
that
contains
variables,
the
calculator
will
ask
you
to
input
values
for
the
variables
whenever
the
calculation
is
executed.
Enter and execute X = (A+B)+2
Enter the formula.
MOA
COREG
BO2
|
X=(A+B)+2_
| :
Execute the formula.
3]
A?
Enter
values
for
the
variables.
7
Ge
B?
8G)
=
(After
approx.
0.5
seconds)
a
7.5
Execute
the
formula
again.
ee)
A?
Enter
different
values.
10)
20
fe)
=
(After approx. 0.5 seconds)
ae
ee
Ren
tee
ee
er
age
GN
ey
Re
Se
ag
ee
Fy
ee
ee
ee
ge ee
en
ee
another
one.
In
the
example
above,
we
first
assigned
a
value
of
7
to
variable
A.
If
we
wanted
to
keep
the
7
the
second
time
we
executed
the
same
caiculation,
we
could
have
simply
pressed
(when
the
calculator
asked
for
input
of
a
value
for
A,
because
A
was
already
assigned
7
the
first
time
around.
Note,
however,
that
all
variables
are
cleared
when
you
press
the
key
or
when
you
switch
the
power
of
the
calculator
off
*You
can
omit
the
“X
="
when
inputting
the
formula
used
in
the
example.
it
you
do,
the
display
"X="
will
not
appear
before
the
result
of
the
formula
If you press [si] followed by (axe), the calculator will display the name of the variable that
has been assigned the displayed value, as long as you hold down the key
(Using the previous formula)
i]
&) A?
Enter a value for Variable A. iS}
8 8_
Confirm the variable name. @
(HF) (tam) (While is held down.) A?
a
(Release
[usm).)
8_
Continue with the execution. a
eg 9 be) 8.5
Confirm the variable name.
(HF)
[kine]
(While
(=)
is
held
down.)
X=
(Release [ictm).) 8.5
You can connect multiple formulas that contain variables into a multistatement (see page
28).
»