Has anyone used the RPN-25 program 41-Discriminant of a Polynomial•?
02-12-2024, 10:31 PM
Post: #1
 Matt Agajanian Senior Member Posts: 1,012 Joined: Dec 2013
Has anyone used the RPN-25 program 41-Discriminant of a Polynomial•?
Hi all.

I would appreciate some clarification.

After I store the polynomial’s coefficient, what are the next keystrokes/steps to calculate and view the roots?

Thank you.
02-13-2024, 01:11 AM
Post: #2
 Thomas Klemm Senior Member Posts: 2,002 Joined: Dec 2013
RE: Has anyone used the RPN-25 program 41-Discriminant of a Polynomial•?
From RPN-25 CE Program Examples:
Quote:Programs prefixed 41 were originally written for the HP-41 and published on this amazing website: hp41programs.yolasite.com
Included in RPN-25 CE by courtesy of the author, Jean-Marc Baillard.

Have you consulted Discriminant for the HP-41 already?

(02-12-2024 10:31 PM)Matt Agajanian Wrote:  After I store the polynomial’s coefficient, what are the next keystrokes/steps to calculate and view the roots?

The programs don't calculate the roots of a polynomial but its discriminant.
You can find examples for a polynomial of degree 3 that tells you how many roots it has.
02-13-2024, 01:21 AM (This post was last modified: 02-13-2024 01:22 AM by Matt Agajanian.)
Post: #3
 Matt Agajanian Senior Member Posts: 1,012 Joined: Dec 2013
RE: Has anyone used the RPN-25 program 41-Discriminant of a Polynomial•?
(02-13-2024 01:11 AM)Thomas Klemm Wrote:  From RPN-25 CE Program Examples:
Quote:Programs prefixed 41 were originally written for the HP-41 and published on this amazing website: hp41programs.yolasite.com
Included in RPN-25 CE by courtesy of the author, Jean-Marc Baillard.

Have you consulted Discriminant for the HP-41 already?

(02-12-2024 10:31 PM)Matt Agajanian Wrote:  After I store the polynomial’s coefficient, what are the next keystrokes/steps to calculate and view the roots?

The programs don't calculate the roots of a polynomial but its discriminant.
You can find examples for a polynomial of degree 3 that tells you how many roots it has.
Yes, I saw that webpage. My confusion. Since the RPN-25CE showed the roots, I thought there was another step to calculate and reveal the roots. Now I know. Thanks.
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