[mathcad] RE: Mathcad bug or programming error?

[mathcad] RE: Mathcad bug or programming error?
Author: Zijp, Maarten Posted: Tue, 29 Jan 2008 09:45:40 +0100
Hi Andy, Sorry to say but to my opinion it is a simple programming error. Inside both for loops you initiliaze your result matrix therefore you will loose all results from pass 1 upto S-1. Mathcad cannot be blamed this time... So, use another variable to store the intermediate results, I used t. You might also considere to either change the upper range of iteration variable j to I-1 as is the case in version two or adapt the upper range for j in function f2 in the summation...... kind regards Maarten Zijp Maarten Zijp room 5045 Information Technology Group Leerstoelgroep Toegepaste Informatiekunde Social Sciences Group Wageningen University Leeuwenborch (Building 201) Hollandseweg 1 6706 KN Wageningen The Netherlands tel (0)317-484079 fax(0)317-483158 E-mail: "maarten.zijp" internet: http://www.inf.wur.nl/ <http://www.inf.wur.nl/> ________________________________ From: "Andy.Spragg" "mailto:Andy.Spragg" Sent: 28 January 2008 14:11 To: Mathcad Discussion List Subject: [mathcad] Mathcad bug or programming error? Hi folks, The attached v11 worksheet contains two versions of a program, that I believe to be trivially different. The output from the two versions is utterly different. I spent altogether too long trying to find the error of my ways in one version, before scraping the barrel of reformulation and finding it not to be empty after all. I seek opinions on whether the difference in output is due to Mathcad bug or programming error. If the former is the case, it is a pretty toxic bug (which may of course have long since been squashed). Can anyone please either point out my error, or test these programs in the current version of Mathcad? Andy
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