15c challenge: accuracy of a complex equation system

[Werner]

(08-11-2023 07:56 AM)J-F Garnier Wrote:  I was expecting my results to be more accurate but to my surprise, both 15C results are inaccurate !

While in general a direct solve is somewhat more accurate (and 3x faster or so) than a multiplication by the inverse, they will both lose 4-5 digits due to the problem's condition number of ~2e4

Quote:Solutions for the 41C (for instance with the Advantage ROM) are welcome too.[/list]

not for the 42S?

Cheers, Werner