Solve Polyroots refreshed

Solve Polyroots refreshed - Solve Polyroots refreshed - Messages

#1 Posted: 10/22/2021 7:43:51 PM
Jean Giraud

Jean Giraud

983 likes in 6866 posts.

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Solve POLYROOTS sort Complex.sm (9 KiB) downloaded 66 time(s).
Solve POLYROOTS Gramm_Schmidt.sm (44 KiB) downloaded 57 time(s).
Solve POLYROOTS Legendre.sm (45 KiB) downloaded 60 time(s).
Solve POLYROOTS Cubic solver.sm (71 KiB) downloaded 68 time(s).
#2 Posted: 10/23/2021 9:07:30 AM
Jean Giraud

Jean Giraud

983 likes in 6866 posts.

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... refactored

Solve POLYROOTS sort Complex.sm (19 KiB) downloaded 53 time(s).
#3 Posted: 10/30/2021 12:32:43 AM
John Heidenreich

John Heidenreich

5 likes in 67 posts.

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Wrote

Solve POLYROOTS sort Complex.sm (9 KiB) downloaded 66 time(s).
Solve POLYROOTS Gramm_Schmidt.sm (44 KiB) downloaded 57 time(s).
Solve POLYROOTS Legendre.sm (45 KiB) downloaded 60 time(s).
Solve POLYROOTS Cubic solver.sm (71 KiB) downloaded 68 time(s).




Jean for the Gramm Schmidt POLYROOTS doc, i adjusted decimal points to 15 for the maple solve and got: -0.906181463330827 for one of the solves on pages 4,
compared with the Smath solution of: -0.906181339783194 on page 3.


No idea about accuracy of numbers, but thought i would just have a slightly deeper look,

all the best,

John
#4 Posted: 10/30/2021 8:38:31 AM
Jean Giraud

Jean Giraud

983 likes in 6866 posts.

Group: User

Wrote

Jean for the Gramm Schmidt POLYROOTS doc, i adjusted decimal points to 15 for the maple solve and got: -0.906181463330827 for one of the solves on pages 4,
compared with the Smath solution of: -0.906181339783194 on page 3.
No idea about accuracy of numbers, but thought i would just have a slightly deeper look,
all the best,
John


The solve(4) organizes the roots in order, Maple not but OK for Lagrange.
solve warrants at least 4 decimals, most of the times ~ 6.
The note about solve(4) 4 decimals has been removed from the description.
Just recently removed ... Thus missing for best guidance/disambiguation.
Sad for the hale storm ... Be good ... Jean.

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