(HP-67) Real Determinants - Printable Version +- HP Forums (https://www.hpmuseum.org/forum) +-- Forum: HP Software Libraries (/forum-10.html) +--- Forum: HP-65/67/97 Software Library (/forum-12.html) +--- Thread: (HP-67) Real Determinants (/thread-15200.html) |
(HP-67) Real Determinants - SlideRule - 06-16-2020 03:59 PM An extract from Programmable Calculator Evaluation of Real Determinants, Interface Age, May 1980 (pgs 104-107), M. Patt & L. Fisher {University of Lowell} " … pocket calculator program … presented for use with the Hewlett-Packard Model 67 (Reverse-Polish) … self-contained and complete, fits on a single magnetic card … enable an operator to quickly evaluate real determinants of sizes two-by-two through six-by-six … most accurate when all determinant elements are integers. Errors are generally less than 0.001 % for a six-by-six (worst case) determinant with all integer elements. SOLUTION BY PIVOTAL CONDENSATION The program written for the HP-67 calculator evaluates the determinant of a square matrix by repeated applications of the process of pivotal condensation. This procedure allows for successive reduction in determinant size, finally leaving a two-by-two determinant to be evaluated. " BEST! SlideRule |