2013-03-09 16:36:59 +0100 | received badge | ● Teacher (source) |
2013-03-09 16:36:59 +0100 | received badge | ● Self-Learner (source) |
2013-03-07 00:50:02 +0100 | answered a question | only get 1 arrow using nevermind. Q=arrow3d((0,1,-1), (1,2,0), color="green") P=arrow3d((0,1,0), (2,3,1), color="red") show(P+Q, figsize=5) works. from: http://sagemath.wikispaces.com/line3d |
2013-03-07 00:33:05 +0100 | asked a question | only get 1 arrow using |