Casio CFX-9800G-w Owners Manual - Page 60

csamECInEel, wEEEICIM, MEIMEJ

Page 60 highlights

IllTo Perform an Integration Calculation Example To perform the integration calculation for the function f i 5(2x2 + 3x+ 4)dx Input the function fi x). csamECInEel wEEEICIM IS(042 +3X+4, _ Input the start point and end lifiC2XE+3X+4 , 1.* 5,-1 point. MEIMEJ Input the number of divisions EDEI ,I; ( 2X 2 +3X+4 x 1 a 5: 1 li.;r (2X 2+ I.33 : +4667 61 6567; 67 The result takes a few seconds to appear on the display. COO K You can confirm the parameters of this calculation by recalling the values stored in the value memories. IH 134.6666667 •Xbculeiasrrnnetdhanemtpoacenor(elnAyntetethhnxertpossrueeogssfhsmtihZoaen,yrct,hbooaerrrtoe0cms)a,pntiothtbneaeddt i.vunaIsgfreiyyadoabiulnlueeothnm-meaimtefunmen, iocsthtriyreoenigcnfaaixtrlh)cd.uee_l-dIacf taayolosrcuuaaluuactstooieonmnasa.nt-atyicnoatt,lhluyesrsinevglaetrchiates- the most appropriate value. •In general, calculation precision is ±1 at the least significant digit of the result. -84- MApplication of Integration Calculation *Integrals can be used in addition, subtraction, multiplication and division. Example l abf(x)dx+ f edg(x)dx •Integration results can be used in addition, subtraction, multiplication and division, in functions. Example 2 xrf(x)dx, log (fabf(x)dx) •Functions can be used in any,of the terms (fix), a, b, n) of an integral. Example (sinx +cosx)dr =f (sinx+cosx, sin 0.5; cos 0.5, 5) *Note that you cannot use differential, integration, or E calculations inside of an integration calculakion term. Important •Pressing LE 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): -- •Integration calculations use valUe memories k through N kir storage, deleting any contents that may be already stored. This also means that you cannot use these value memories during integration Calculations., . 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-

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IllTo
Perform
an
Integration
Calculation
To
perform
the
integration
calculation
for
the
function
fi
5
(2x
2
+
3x+
4)dx
Example
Input
the
function
fi
x).
csamECInEel
wEEEICIM
IS(04
2
+3X+4,
_
Input
the
start
point
and
end
lifiC2XE+3X+4
,
1.*
5,-1
point.
MEIMEJ
Input
the
number
of
divisions
EDEI
,I;
(
2X
2
+3X+4
x
1
a
5:
1
l
i.;r
(2X
2
+
I.
3
3:+466
7
61
667
5;
6
7
The
result
takes
a
few
seconds
to
appear
on
the
display.
You
can
confirm
the
parameters
of
this
calculation
by
recalling
the
values
stored
in
the
value
memories.
COO
K
IH
134.
6666667
•X
is
the
only
expression
that
can
be
used
in
the
functionfix)._If
you
use
anyother
varia-
ble
name
(A
through
Z,
r,
or
0),
that
variable
name
is
regarded
as
a
constant,
using
the
current
contents
of
the
corresponding
yalue-memory
in
the
-calculation.
-
and
parentheses
may
be
omitted.
If
you
omit
n,
the
calculator
automatically
selects
the
most
appropriate
value.
•In
general,
calculation
precision
is
±1
at
the
least
significant
digit
of
the
result.
MApplication
of
Integration
Calculation
*
Integrals
can
be
used
in
addition,
subtraction,
multiplication
and
division.
l
a
b
f(x)dx+
f
e
d
g(x)dx
Example
•Integration
results can
be
used
in
addition,
subtraction,
multiplication
and
division,
in
functions.
Example
2
xrf(x)dx,
log
(f
a
b
f(x)dx)
Functions
can
be
used
in
any
,of
the
terms
(fix),
a,
b,
n)
of
an
integral.
(sinx
+cosx)dr
=f
(sinx+cosx,
sin
0.5;
cos
0.5,
5)
Example
*Note
that
you
cannot
use
differential,
integration,
or
E
calculations
inside
of
an
integra-
tion
calculakion
term.
Important
•Pressing
LE
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):
--
•Integration
calculations
use
valUe
memories
k
through
N
kir
storage,
deleting
any
contents
that
may
be
already
stored.
This
also
means
that
you
cannot
use
these
value
memories
during
integration
Calculations.,
.
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.
-84-
-85-