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2019-01-05 04:57:34 -0600 received badge  Popular Question (source)
2015-02-03 08:41:30 -0600 answered a question I don't know why Sage return 0 for integrate(sin(2*x).abs(),(x,0,pi)) when its value is 2

With Sage-4.7, integrate(abs(sin(t)),t,0,pi) returns 2 as expected.

2015-02-01 03:32:51 -0600 received badge  Editor (source)
2015-02-01 03:11:50 -0600 answered a question How do I register so I can use the Sage Notebooks

Is it the stand-alone Sage application ? If so, at first launch it asks for a new password in a terminal window. Next, you can log in the notebook with user id : admin password : the password you entered before.

2015-01-30 06:52:04 -0600 commented answer cannot calculate limit

Thanks ! Note that converting to exponentials works. My best interval is (4.7, 5.8), sorry

2015-01-30 05:19:40 -0600 received badge  Student (source)
2015-01-30 04:20:28 -0600 asked a question cannot calculate limit

No answer from Sage-6.4.1 for this limit :

var('n'); u = (1+sqrt(n))^(-n); limit(u(n=n+1)/u,n=infinity)

Sage 4.7 gives 0 (correct). Why ?

2015-01-30 04:15:30 -0600 asked a question cannot calculate limit

No answer from Sage-6.4.1 for this limit :

var('n') u = (1+sqrt(n))^(-n) limit(u(n=n+1)/u,n=infinity)

whereas Sage 4.7 gives 0 (correct). Why ?