Using Integration In A Program - HP -32S Owner's Manual

This uncertainty indicates that the result might be correct to only four
decimal places. In reality, this result is accurate to seven decimal
places when compared with the actual value of this integral. Since the
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 instruction does not produce
a labeled display (S-value), since this might not be the significant out
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' program on page 215 in part 4 includes an 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