Comment #25 on issue 2085 by smichr: Limit code severely broken.
http://code.google.com/p/sympy/issues/detail?id=2085

These all (except the one raising an assertion error) work with commits 2124 and 2084 that are in review. The one with the assertion error fails because an nseries method is not implemented for the polygamma function which is generated in the process of calculating the limit.

see issue 2084 and issue 2124.

h[1] >>> limit(sin(x)/x, x, oo)
0
h[2] >>> limit(cos(x)/x,x,oo)
0
h[2] >>> limit(cos(x)/x, x, oo)
0
h[2] >>> limit(atan(x), x, oo)
pi/2


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