Unexpected result calculating the determinant of a singular matrix (42S)

10242019, 06:34 AM
Post: #27




RE: Unexpected result calculating the determinant of a singular matrix (42S)
(10232019 11:06 PM)Valentin Albillo Wrote:Quote:A 7x7 matrix with integer elements less than 100 and determinant 1 will always have at least 1 digit correct when the calculations are done with 15 digits Suppose you calculate the determinants using Cramer's rule. The intermediate products would then be no larger than 100^7 = 1e14, the final result being 1  so you'll lose at most 14 digits. I think ;) Cheers, Werner 

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