> Please describe what you're really doing. A x = b, A given (constant), x and b variables.
I need investigate the x_i that match a set of criteria (essentially which subset of the ( b_j ) are required in their solution) and substitute the subset obtained into functions of the form f( x_i1, ..., x_in ). I next dump out the results in latex. I can of course do the algebra by manipulating A, but it would be nice to be able to automate this as much as possible: what I would like to do is to introduce variables x = ( x_1, x_2, ..., x_M ) and b = (b_1, b_2, ..., b_M). Perusing the docs (and this mailing list), I failed coming up with a simple way of creating such vectors. -gerhard --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---