Differential Equations

[Dieter]

(03-27-2017 03:49 AM)bshoring Wrote:  I have played around with the program by Fernando del Rey at the bottom of Valentin's article "Long Live the HP-25 ! I have plugged into it the formula for calculating Simple Interest on the basis of a 365-day year with the formula:
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I am sure that almost everyone here will have the quoted Albillo article at hand, ...but I don't. I think I read it some years ago but at the moment even Google cannot find the original PDF. But without knowing how the mentioned 4th order program works noone is able to help interpreting its output. So, do you have a link to that article, or can you post the program here? 49 steps should not be much of a problem. ;-) Be sure to also include your code for the interest function.

Dieter