2005-12-19T06:20:35ZFluxBBhttp://www.mathisfunforum.com/viewtopic.php?id=2256]]>http://www.mathisfunforum.com/profile.php?id=21282005-12-19T06:20:35Zhttp://www.mathisfunforum.com/viewtopic.php?pid=21046#p21046But it won't work in all ways: It can bring to something like that: that is no null at all the cases.]]>http://www.mathisfunforum.com/profile.php?id=21282005-12-19T06:19:03Zhttp://www.mathisfunforum.com/viewtopic.php?pid=21045#p21045If you are able to reduce your limit to sum of non-multiple limits you can find them and then you can sumarize them.]]>http://www.mathisfunforum.com/profile.php?id=21282005-12-19T06:17:11Zhttp://www.mathisfunforum.com/viewtopic.php?pid=21044#p21044I don't know better method, but here how I solve this: ,so we can proof it only for positive x and y and xy is positive so we can sqrt() it: , but but and , so and ]]>http://www.mathisfunforum.com/profile.php?id=21282005-12-19T05:29:09Zhttp://www.mathisfunforum.com/viewtopic.php?pid=21034#p21034Is there any easy way to show the limit of a non-continuous function, that is, besides doing an epsilon-delta proof?