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Is this a bug or what am I missing, simple limit computation

asked 2015-02-28 18:02:17 +0200

userX gravatar image

updated 2015-02-28 23:56:49 +0200

vdelecroix gravatar image
f=(e^(-x))/(2+ sin(x));
limit(f,x=infinity)

this yields "undefined", but the limits is clearly zero, thus I gather there's a bug or I am missing something basic . All help is appreciated.

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answered 2015-03-01 08:20:18 +0200

rws gravatar image

If Maxima is unsatisfactory, try SymPy:

sage: f = exp(-x) / (2 + sin(x))
sage: import sympy
sage: sympy.limit(f,x,oo)
0
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thank you, appreciate the sympy tip

userX gravatar imageuserX ( 2015-03-03 17:25:27 +0200 )edit
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answered 2015-03-01 00:10:24 +0200

vdelecroix gravatar image

Yes it is a bug. And still present in the development version sage-6.6.beta2. I opened ticket #17878 for that. Thanks for the report! I hope it will be fixed in a next release.

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thank you kindly

userX gravatar imageuserX ( 2015-03-03 17:25:35 +0200 )edit
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answered 2015-02-28 21:04:25 +0200

Joe gravatar image

It certainly looks like a bug. Limit is 0 - WolframAlpha gives limit as 0

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Asked: 2015-02-28 18:02:17 +0200

Seen: 214 times

Last updated: Mar 01 '15