HP Forum Archive 16

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Prof. Kahan Article Query Message #1 Posted by Warren Anderson on 17 Jan 2007, 8:49 a.m. In the past month I recall reading an article by Prof. W. Kahan about errors of numeric integration that begins with a scenerio of a colleague bringing him a function to integrate with a calculator. It seems straight forward, he wonders if it is a trick, and of course it turns out to illustrate the limitations of all calculator algorithms when applied to misbehaving functions (misunderstood is probably a better word; they can be handled just fine after conditioning). At least, I think that is an article I remember. Does anyone have the link? I've poured over the MoHPC DVD as well as Prof. Kahan's website, and cannot find it. Thanks!

Re: Prof. Kahan Article Query Message #2 Posted by Valentin Albillo on 17 Jan 2007, 8:55 a.m., in response to message #1 by Warren Anderson Hi, Warren: This is it: The INTEGRATE key on the HP-34C Best regards from V.

Re: Prof. Kahan Article Query Message #3 Posted by Les Wright on 17 Jan 2007, 10:13 a.m., in response to message #1 by Warren Anderson On the DVD, go to the main menu. The link to the article on the disk is labeled simply HP34C: August 1980, under the heading HP Journal Articles. The companion piece on the SOLVE function is at the link labeled HP34: December 1979. Les

Re: Prof. Kahan Article Query Message #4 Posted by Warren Anderson on 17 Jan 2007, 10:59 a.m., in response to message #1 by Warren Anderson Right under my nose! I'm losing it... Thanks to you both.

Re: Prof. Kahan Article Query Message #5 Posted by Les Wright on 17 Jan 2007, 12:44 p.m., in response to message #4 by Warren Anderson It actually took a while for me to find it at first. Perhaps in feature versions of the DVD the link could be labeled "Kahan's HP34C INTEGRATE Article, August 1980".

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