Solving and Integrating Programs 14–7
File name 32sii-Manual-E-0424
Printed Date : 2003/4/24 Size : 17.7 x 25.2 cm
Integrating a Program
In chapter 8 you saw how you can enter an equation (or expression) — it's
added to the list of equations — and then integrate it with respect to any
variable. You can also enter a program that calculates a function, and then
integrate it with respect to any variable. This is especially useful if the function
you're integrating changes for certain conditions or if it requires repeated
calculations.
To integrate a programmed function:
1. Enter a program that defines the integrand's function. (See "To write a
program for
∫
FN" below.)
2. Select the program that defines the function to integrate: press
{
V
label. (You can skip this step if you're reintegrating the same program.)
3. Enter the limits of integration: key in the lower limit and press
then
key in the upper limit.
4. Select the variable of integration and start the calculation: press
{
variable.
Notice that FN= is required if you're integrating a programmed function, but
riot if you're integrating an equation from the equation
list.
You can halt a running integration calculation by pressing
or
f
.
However, no information about the integration is available until the
calculation finishes normally. To resume the calculation, press
f
again.
Pressing
W
while an integration calculation is running cancels the
∫
FN
operation. In this case, you should start
∫
FN again from the beginning.
To write a program for
∫
FN;
The program can use equations and RPN operations — in whatever
combination is most convenient.
1. Begin the program with a label. This label identifies the function that you
want to integrate (
/
label).
2. Include an INPUT instruction for each variable, including the variable of
integration. INPUT instructions enable you to integrate with respect to any
variable in a multi–variable function. INPUT for the variable of integration
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