HP HP-28S - Page 124

In this example you're integrating an expression without empirical
constants, so you
could specify 12-digit accuracy. However, the itera-
tive process of
numerical integration takes longer for greater accuracy,
so
here you'll specify an accuracy of .00001.
~~~~~~~~~~~.-~
1 E - 5 I ENTER I 3: I EXP (W .. 3+2*X ..... 2- X+4) I
2: { X 0 1 }
1: .00001
Dalil!iE!llll!:llDlllmIDlmD
Find the integral.
.rn
3:
2: 103.117678153
1: 1. 03086911923E-3
Dalil!iE!llll!:llDlllmIDlmD
The estimated integral is returned to level 2, and an error bound is
returned to level 1.
The value of the integral is 103.118 ± .001. Note that the error bound
returned is approximately the product of the estimated integral and
the accuracy you specified.
10: Calculus 123