On 2013-01-09, Daniel Friedan <[email protected]> wrote: > ------=_Part_1296_8764740.1357697544661 > Content-Type: text/plain; charset=ISO-8859-1 > > solve_right() fails on matrices of arbitrary precision real numbers for > some but not all values of the precision. See examples below. > > I'm seeing this in Sage 5.5 64bit under OS X 10.6.8 and also in Sage 5.2 > under ScientificLinux. > > sage: RF= RealField(52) > sage: Y=matrix(RF,2,2,1) > sage: A = matrix(RF,[[0.24,1,0],[1,0,0]]) > sage: A.solve_right(Y) > ValueError: matrix equation has no solutions
indeed, also fails for me (Sage 5.6.beta2 on OSX 10.6.8). It's certainly a bug. > > sage: RF= RealField(53) > sage: Y=matrix(RF,2,2,1) > sage: A = matrix(RF,[[0.24,1,0],[1,0,0]]) > sage: A.solve_right(Y) > > [ 0.000000000000000 1.00000000000000] > [ 1.00000000000000 -0.240000000000000] > [ 0.000000000000000 0.000000000000000] > > > solve_right() fails for other values of the precision, including 10, 58, > and 98. I haven't tried to search systematically. > -- You received this message because you are subscribed to the Google Groups "sage-support" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sage-support?hl=en.
