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view toolbox/lotkin.m @ 0:8f23314345f4 draft
Create local repository for matrix toolboxes. Step #0 done.
author | Antonio Pino Robles <data.script93@gmail.com> |
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date | Wed, 06 May 2015 14:56:53 +0200 |
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function A = lotkin(n) %LOTKIN Lotkin matrix. % A = LOTKIN(N) is the Hilbert matrix with its first row altered to % all ones. A is unsymmetric, ill-conditioned, and has many negative % eigenvalues of small magnitude. % The inverse has integer entries and is known explicitly. % Reference: % M. Lotkin, A set of test matrices, MTAC, 9 (1955), pp. 153-161. A = hilb(n); A(1,:) = ones(1,n);