Using Integration (/Fn) - HP -32S Owner's Manual

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
Ienter 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
calculation finishes normally.) To resume the calculation, press Ir/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 IXEQ I, IGTO 1, or {RTN} cancels the /FN operation. In this case, start the opera
tion over rather than resuming it.
8: Numerical Integration 127