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Numerical Integration Of Expressions - HP -28S Manual

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Numerical Integration of Expressions
In this example you'll find a numerical value for the integral
1
~ exp (x
3
+
2x
2
-
X
+
4)dx
Clear the stack.
.1
CLEAR
I
Put the expression on the stack.
l:]
IILOGsJ
D::P
X
I~
3
[±]
2
o
X
I~
2
G
X
[±]
41ENTERJ
Key in the variable and limits of integration. You'll enter them as ob-
jects within a list object. (This is a typical use of a list-combining
several objects so you can handle them as a single object.)
OJ
X
1
SPACE
I
0
I
SPACE
I
1
I
ENTER
I
3:
2: 'EXP(X
A
3+2*X
A
2-X+4),
1:
{ X 121 1 )
1lJiH1lI!lIEIIm:.l1IIIImIDDIIDI
X is the variable of integration, 0 and 1 the limits of integration.
Next key in the accuracy you require.
If the expression included constants derived from empirical data,
specify the accuracy of the constants. For example, if the constants are
accurate to three decimal places, specify an accuracy of .001.
122
10: Calculus

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