|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
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