Updates:
Labels: NeedsReview
Comment #1 on issue 1944 by smi...@gmail.com: limit() returns incorrect
answer for limit(exp(-x/a), x, oo)
http://code.google.com/p/sympy/issues/detail?id=1944
commit 1944 in [ https://github.com/sympy/sympy/pull/61 ] this is now the
behavior:
h[2]
Comment #7 on issue 2130 by smi...@gmail.com: wrong limit
http://code.google.com/p/sympy/issues/detail?id=2130
Perhaps the better fix is to make subs return NaN when it make a subs that
leads to a an undefined state:
(1/x).subs(x, 0) -> NaN, not 1
tan(x).subs(x, pi/2) -> NaN
What do you thi
Comment #3 on issue 2156 by asmeurer: Limit pretty print bug
http://code.google.com/p/sympy/issues/detail?id=2156
The problem is that in a monospace font, the single character arrow is too
small. It needs to be two characters long.
It would be better to have a - character that lined up with
Comment #6 on issue 2130 by asmeurer: wrong limit
http://code.google.com/p/sympy/issues/detail?id=2130
I think the "NotImplementedError: Don't know how to calculate the mrv
of 'Sum(1/k, (k, 1, n))'" was the correct error, i.e., the Gruntz algorithm
doesn't know how to calculate the mrv of Su
Updates:
Status: Accepted
Labels: Documentation
Comment #1 on issue 2157 by asmeurer: sympy development rules
http://code.google.com/p/sympy/issues/detail?id=2157
There was some talk about not regressing in the coverage_doctest.py test
(i.e., all new functions/methods must have
Updates:
Labels: NeedsReview asmeurer
Comment #3 on issue 294 by asmeurer: Pass coverage_doctest.py
http://code.google.com/p/sympy/issues/detail?id=294
(No comment was entered for this change.)
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Comment #3 on issue 1092 by smi...@gmail.com: limit(sum(1/k, (k, 1,
n))-log(n), n, oo) should do it
http://code.google.com/p/sympy/issues/detail?id=1092
This gives -oo in master and can probably be closed. I believe what happens
is the Sum cannot be evaluated as being unbounded so it gets p
Comment #2 on issue 2156 by nicolas@gmail.com: Limit pretty print bug
http://code.google.com/p/sympy/issues/detail?id=2156
Indeed. Rightwards Arrow (0x2192) seems a reasonable choice.
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Updates:
Labels: Printing Series
Comment #1 on issue 2156 by asmeurer: Limit pretty print bug
http://code.google.com/p/sympy/issues/detail?id=2156
There are a ton of arrows in Unicode. See
http://en.wikipedia.org/wiki/Arrow_(symbol)#Arrows_in_Unicode.
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Updates:
Status: Started
Labels: -PassedReview NeedsBetterPatch
Comment #5 on issue 2130 by Vinzent.Steinberg: wrong limit
http://code.google.com/p/sympy/issues/detail?id=2130
I get this with your branch:
In [1]: limit(sum(1/k, (k, 1, n))-log(n), n, oo)
-
Status: New
Owner: Vinzent.Steinberg
CC: ondrej.c...@gmail.com, asmeurer
Labels: Type-Enhancement Priority-Medium
New issue 2157 by Vinzent.Steinberg: sympy development rules
http://code.google.com/p/sympy/issues/detail?id=2157
I think there is a consensus about the requirements for inclusion o
Comment #4 on issue 2130 by smi...@gmail.com: wrong limit
http://code.google.com/p/sympy/issues/detail?id=2130
Excellent idea! Since I am working on the limit/series issues I found that
this has caused a problem with an old issue 1092. The limit can't handle
the sum so the whole thing fails
Updates:
Labels: smichr NeedsReview
Comment #2 on issue 1447 by smi...@gmail.com: limit(tan(x),x,pi/2,dir='-')
returns tan(pi/2)
http://code.google.com/p/sympy/issues/detail?id=1447
In commit 1447 of smichr's github branch 2084 cot and tan are handled
heuristically in limit() to giv
Updates:
Labels: -NeedsReview PassedReview
Comment #3 on issue 2130 by Vinzent.Steinberg: wrong limit
http://code.google.com/p/sympy/issues/detail?id=2130
Thanks, this looks good and works. Let's push this in after waiting 24
hours.
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Status: Fixed
Comment #1 on issue 1470 by smi...@gmail.com: limit(sqrt(-x),x,oo) hangs
http://code.google.com/p/sympy/issues/detail?id=1470
In master this now gives
h[1] >>> limit(sqrt(-x),x,oo)
(oo)*I
I was not able to bisect and find where it didn't work. Since it's n
Updates:
Labels: -NeedsReview PassedReview
Comment #2 on issue 2000 by nicolas@gmail.com: Inconsistencies with
limit()
http://code.google.com/p/sympy/issues/detail?id=2000
Patch is ok for me.
I open a new bug request concerning the pretty print bug (issue 2156).
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Status: Accepted
Owner: asmeurer
Labels: Type-Defect Priority-Medium
New issue 2156 by nicolas@gmail.com: Limit pretty print bug
http://code.google.com/p/sympy/issues/detail?id=2156
Reported by Aaron in issue 2000 :
In [24]: Limit(x, x, 1, dir='-')
Out[24]:
lim x
x->1
Should be
In [24]: L
Updates:
Labels: smichr NeedsReview
Comment #2 on issue 2130 by smi...@gmail.com: wrong limit
http://code.google.com/p/sympy/issues/detail?id=2130
See [ https://github.com/sympy/sympy/pull/91 ]
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Comment #1 on issue 2000 by smi...@gmail.com: Inconsistencies with limit()
http://code.google.com/p/sympy/issues/detail?id=2000
smichr branch 2000:
h[1] >>> x.limit(x, 1, dir='-')
1
https://github.com/sympy/sympy/pull/90
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Comment #2 on issue 2071 by smi...@gmail.com: Wrong limit result with
expressions containing sin/cos
http://code.google.com/p/sympy/issues/detail?id=2071
In smichr's branch 2084 these come back as:
h[3] >>> limit(x**(S(2)/3)*sin(x**2)/(x-1), x, oo)
nan
h[3] >>> limit(x**(2/3)*sin
Comment #1 on issue 2130 by smi...@gmail.com: wrong limit
http://code.google.com/p/sympy/issues/detail?id=2130
That's because subs is being used when parsing an Add rather than limit.
Branch 2130 at smichr's github acct has a proposal for correction.
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Comment #1 on issue 2131 by smi...@gmail.com: failing limit
http://code.google.com/p/sympy/issues/detail?id=2131
in branch 2084 of smichr's this gives
h[1] >>> limit(diff(x**3*sin(1/x), x) / x, x, 0)
nan
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