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From: edp@jareth.enet.dec.com (Eric Postpischil (Always mount a scratch monkey.))
Newsgroups: comp.sys.handhelds
Subject: Re: Numerical Integration on the HP48
Message-ID: <23222@shlump.lkg.dec.com>
Date: 6 Jun 91 14:37:01 GMT
References: <1991Jun5.192839.4847@ll.mit.edu>
Sender: newsdaemon@shlump.lkg.dec.com
Reply-To: edp@jareth.enet.dec.com (Eric Postpischil (Always mount a scratch monkey.))
Organization: Digital Equipment Corporation
Lines: 29

In article <1991Jun5.192839.4847@ll.mit.edu>, wjc@llex.ll.mit.edu ( Bill
Chiarchiaro) writes:

>I have a version E HP48SX and have been trying to get it to
>numerically integrate a program object (rather than an algebraic).

>If I put limits of integration in stack levels 3 and 4, a program
>object in level 2, and a quoted name in level 1, I get a "Bad Argument
>Type" error when I hit the integral key.

Put the following on the stack:
	lower upper 'expression' variable

In the expression, calls to programs should appear in the form:
	name(arguments)

The program should have the form:
	<< -> local variable names << program code >> >>

I tried this with:
	2 3 'S(X)' 'X'

while S contained \<< \-> X \<< X SQ \>> \>>, and it worked. giving the
correct result (6.333...).


				-- edp (Eric Postpischil)
				"Always mount a scratch monkey."
				edp@jareth.enet.dec.com