# Cassio's profile - activity

 2018-08-23 06:27:23 -0500 received badge ● Famous Question (source) 2017-07-26 22:33:15 -0500 received badge ● Notable Question (source) 2017-07-26 22:33:15 -0500 received badge ● Popular Question (source) 2016-09-12 16:22:41 -0500 received badge ● Famous Question (source) 2016-09-12 16:22:41 -0500 received badge ● Notable Question (source) 2016-09-12 16:22:41 -0500 received badge ● Popular Question (source) 2014-02-12 05:07:25 -0500 commented answer Limit of 1/x = infinty? Thanks. I get it now, although returning infinity when asking for the two-sided limit seems a bit misleading to me. But it's not just sage doing it... 2014-02-12 05:06:08 -0500 marked best answer Limit of 1/x = infinty? Infinity is not signed There also +Infinity and -Infinity . example : sage: limit(1/x, x=0) Infinity sage: limit(1/x, x=0, dir='+') +Infinity sage: limit(1/x, x=0, dir='-') -Infinity  2014-02-12 05:06:08 -0500 received badge ● Scholar (source) 2014-02-12 05:06:06 -0500 received badge ● Supporter (source) 2014-02-12 04:04:50 -0500 asked a question Limit of 1/x = infinty? Hi, I don't get why limit(1/x, x = 0) returns infinity. Shouldn't it be undefined? Interestingly, Mathematica also returns infinity, but on Wolfram Alpha it says two-sided limit does not exist. 2013-11-03 13:34:50 -0500 asked a question Is there a command to retrieve the last answer? Is there a way to retrieve the last computed answer? Like Mathematica's % command? Thanks.