Casio CFX-9800G - Page 60

WTo
Perform
an
Integration
Caficulation
7
ae
;
: , ninth 5
Example]
To
perform
the
integration
calculation
for
the
function
Sf
(Q2x2+3x+
4)dx
[raRERaRas |
Input the start point and end FCONET ENE, 1252_
point.
DOW)
Input the number of divisions. ” FCDRESSNTA, 1,5;6]
cs pear The result takes a
i few seconds to
@ RETSRFSS 15:6
134. 666666
Input the function f(x).
Ea) a) + |S)
‘appear on the
display.
You
can
confirm
the
parameters
of
this
calculation
by
recalling
the
values
stored
in
the
value
memories.
roe
Gam
ora)
134.
ecekeet.
p
in
the
function
fx).
yo
ni
ther
varia.
X
is
the
only
expression
that.can
be.used
in
the
function
f(x).If
you
use
any-
hits
ble
name
(A
through
Z,
r,
or
@),
that
variable
name
is
regarded
s
fea
oe
e
ndirig-
a
in
the-calculation.-
current
contents
of
the
corresponding-value-memory
in
:
*n
and
parentheses
may
be
omitted.
If
you
omit
,
the
calculator
automatically
selects
the
most
appropriate
value.
oe
Bi
«In
general,
calculation
precision
is
+1
at
the
least
significant
digit
of
the
result.
—84—
Application of integration Calculation: ©: pois
*Integrals
ean
be
used
‘in
addition,
‘subtraction,
multiplication
and
division.
Example “ fPpteyde+ ftelxde-,
Integration
results
can
be
used
in
addition,
subtraction,
multiplication
and
division,
in
functions.
Example]
2x
£°f(x)dx,
log (f,’ f(x)ax)
Functions
can
be
used
in
any
of
the
terms
(f(x),
a,
6,
7)
of
an
integral.
. [Example] [2525 (sinx +cosx)dx
=f (sinx+cosx, sin 0.5, cos 0.5, 5)
¢Note-that
you
cannot
use
differential,
integration,
or
calculations
inside
of
an
integra-
tion
calculation
term.
ee
ns
ae
Pressing
&&
during
calculation.
of
an
integral
(while
the
cursor
is
not
shown
on
the
dis-
Play)
interrupts
the
calculation.
:
*Always
perform
trigonometric
integrations
using
radians
(Rad
Mode)
as
the
unit
of
angular
Measurement
(see
page
28).~
P
.
eintegration
calculations
use
value
memories
K
through
N
for
storage,
deleting
any
contents
that
may
be
already
stored.
This
also
means
that
you
cannot
use
these
value
memories
during
integration
catculations.:'
3.
9
4 --.,
2;
a
In
addition
to
the
above,
the
value
that
represents
division
beginning
point
a
is
stored
in
value
memory
X
following
completion
of
the
integration
calculation.
*This
unit
utilizes
Simpson’s
rule
for
integration
calculation.
As
the
number
of
significant
digits
is
increased,
more
calculation
time
is
required.
In
some
cases,
calculation
results
may
be
erroneous
even
after
considerable
time
is
spent
performing
a
calculation.
In
par-
ticular,
when
significant
digits
are
less
than
1,
an
ERROR
(Ma
ERROR)
sometimes
occurs.
Integration
involving
certain
types
of
functions
or
ranges
can
result
in
relatively
large
errors
being
generated
in
the
values
produced.
~85—
|
;
|