This uncertainty indicatesthat the result
might
be correct to only four
decimal places. In
reality,
this result is accurate to
seven
decimal
placeswhen compared with the actual value of this integral. Sincethe
uncertainty of a result is calculated conservatively,
the
calculator's
ap
proximation
in
most
cases
is
more
accurate
than
its
uncertainty
indicates.
For more information, see appendix D.
Using
Integration
in
a
Program
Integration can be executed from a program. Remember to include or
prompt for the limits of integration before executing the integration,
and
remember that accuracy and execution time are controlled by the
display format at the time the program runs. The two integration in
structions
appear
in the program as:
FN=
label
/FN
d
variable
Labeling Output. The
programmed
/FN instructiondoes not produce
a labeled display (S-value), since this might not be the significantout
put for your program (that is, you might want to do further
calculations with this number). If you
do
want this result displayed,
add
a PSE (Hi
lbl/rtn
I
{PSE})
or STOP (FrTsI) instruction to dis
play the result in the X-register after the
/FN
instruction.
Example:
Normal
Distribution.
The
'Normal
and
Inverse-Normal
Distributions' programon page 215 in part 4 includesan integration
of the equation of the normal density function,
S\fa
JM
(D
- M\
_
~s"7
•7- 2
/"f
* S '
ID.
134
8:
Numerical
Integration
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