Hi, I needed to check the null space of the following matrix:
[ -2 7 ] [ 0 0 ] So I typed: sage: matrix([[-2, 7], [0, 0]]).kernel() And Sage 4.0.rc0 told me that the basis for the resultant vector space was [0, 1]. But this does not seem correct -- [0, 1] does not even satisfy the equation -2x_1 + 7x_2 = 0 that we can read off of the matrix above (if we augment it with [0, 0] in our head). So what's wrong? Is kernel() the right method to use for this? Or did I read the result incorrectly? Or is my reasoning wrong (the possibility that I fear most, since I have a linear algebra final on Monday :D)? --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
