Using
Integration
(/FN)
To
integrate
a
function:
1. Enter a program that defines the integrand's function. (See
"Writing Programs for
/FN"
below.)
2.
Select
the program that
defines
the function to integrate: press
Hi
solve//
|
{FN}
label.
3. Enter the limits of integration: key in the
lower
limit
and press
I
enter
I, then key in the
upper
limit.
4. Select the variable of integration: press
Hi
solve/Jl
{/FN}
variable.
This
starts
the
calculation.
This operation uses far more memory than any other operation in the
calculator. If executing
{/FN}
causes a
MEMORY
FULL
message, re
fer to appendix 6.
You
can halt a running integration calculation by pressing [c]or IR/s I.
(However, no information about the integration is available until the
calculationfinishes normally.)
To
resume the calculation,press I
r/s
I.*
Accuracy.
The display format setting affects the level of accuracy as
sumed for your function
and
used for the result. Integration is more
precise
but
takes
much
longer in the {ALL}
and
higher {FX},
{SC},
and
{EN} settings. The
uncertainty
of the result ends up in the Y-
register, pushing the limits of integration up into the T-
and
Z-
registers. For more information, see "Accuracy of Integration," page
131.
Results.
The X-register contains
the
integral, the Y-register the
un
certainty, the Z-register the
upper
limit,
and
the T-register
the
lower
limit. (The variable of integration contains an immaterial value.)
*Pressing I
XEQ
I, I
GTO
1,
or
{RTN}
cancels the /FN operation. In this case, start the opera
tion over rather than resuming it.
8:
Numerical
Integration
127
To Next Page
Loading...
