HP -32S Owner's Manual page 135

|x$y| I.00E-3 The uncertainty of the
approximation of the
integral.
The integral is 1.61±0.00100. Since the uncertainty would not affect
the approximation until its third decimal place, you can consider all
the displayed digits in this approximation to be accurate.
If the uncertainty of an approximation is larger than what you choose
to tolerate, you can increase the number of digits in the display for
mat and repeat the integration (provided that fix) is still calculated
accurately to the number of digits shown in the display). In general,
the uncertainty of an integration calculation decreases by a factor of
10 for each additional digit specified in the display format.
Example: Changing the Accuracy. For the integral of Si(2) just cal
culated, specify that the result be accurate to four decimal places
instead of only two.
Keys: Display:
EBl DISP | {SC} 4 1.0000E-3
ED LIE 2.0000E0
SOLVE// | {XFN} X X=1.6054E0
1.0000E-5
L*&
idJSP] {FX} 4
Description:
Specifies accuracy to
four decimal places.
The uncertainty from
the last example is still
in the display.
Rolls down the limits
of integration from the
Z- and T-regjsters into
the X- and Y-regjsters.
Result.
Note that the uncer
tainty is about Vioo as
large as the uncertainty
of the SCI 2 result cal
culated previously.
Restores FIX 4 format.
8: Numerical Integration 133