Issue 2043: log should not expand(1/x) (was "expand log can be more
complete" and "logcombine can be less strict")
http://code.google.com/p/sympy/issues/detail?id=2043
This issue is now blocking issue 2113.
See http://code.google.com/p/sympy/issues/detail?id=2113
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Updates:
Status: Started
Blockedon: 2043
Comment #3 on issue 2113 by asmeurer: integrate(cos(log(x**2))/x) hangs
http://code.google.com/p/sympy/issues/detail?id=2113
Interesting. I bisected, and it looks like this commit fixes it:
commit eda08779c7a1b3fe7a97854c3436075c901bd56b
Comment #1 on issue 2112 by smichr: classify_ode(C_j(t).diff(t) +
alpha_j**2*C_j(t) - 4*exp(-t)/(alpha_j**2*J0(alpha_j*c)), C_j(t)) doesn't
catch undetermined_coefficients
http://code.google.com/p/sympy/issues/detail?id=2112
fails in t2, too.
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Comment #2 on issue 2113 by smichr: integrate(cos(log(x**2))/x) hangs
http://code.google.com/p/sympy/issues/detail?id=2113
This integrates in about 0.5 second on my slow laptop in branch t2.
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Comment #17 on issue 1916 by xiaopch: Plotting fails: Window initialization
failed: Unable to share contexts
http://code.google.com/p/sympy/issues/detail?id=1916
#!/usr/bin/env python
"""Plotting example
Demonstrates simple plotting.
"""
from sympy import Symbol, cos, sin, Plot, log, tan
fr
Updates:
Labels: Integration
Comment #1 on issue 2113 by asmeurer: integrate(cos(log(x**2))/x) hangs
http://code.google.com/p/sympy/issues/detail?id=2113
It still hangs on my branch (though it does eventually finish). Of course,
eventually risch_integrate() will be able to handle this
Status: Accepted
Owner: ondrej.certik
Labels: Type-Defect Priority-Medium
New issue 2113 by ondrej.certik: integrate(cos(log(x**2))/x) hangs
http://code.google.com/p/sympy/issues/detail?id=2113
Before this commit:
https://github.com/sympy/sympy/commit/bf32cd36acaa6c1c3ba1dc8f16144d65ec86c708
i
Comment #6 on issue 1475 by asmeurer: New implementation of .eval in
trigonometric functions, implementing sec, csc
http://code.google.com/p/sympy/issues/detail?id=1475
Well, if no one else does it, I will have to eventually in order to make
the trigonometric integration work correctly in r
Status: Accepted
Owner: asmeurer
Labels: Type-Defect Priority-Medium Solvers
New issue 2112 by asmeurer: classify_ode(C_j(t).diff(t) + alpha_j**2*C_j(t)
- 4*exp(-t)/(alpha_j**2*J0(alpha_j*c)), C_j(t)) doesn't catch
undetermined_coefficients
http://code.google.com/p/sympy/issues/detail?id=211
Comment #4 on issue 2110 by Vinzent.Steinberg: failing tests
http://code.google.com/p/sympy/issues/detail?id=2110
(The stacktrace with caching disabled, condensed.)
Attachments:
fail-nocache.log 4.7 KB
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Comment #3 on issue 2110 by Vinzent.Steinberg: failing tests
http://code.google.com/p/sympy/issues/detail?id=2110
Well, it does not depend on caching, setting the ground types does not
change anything either. I'll investigate when I'll find some time...
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Comment #2 on issue 2110 by ondrej.certik: failing tests
http://code.google.com/p/sympy/issues/detail?id=2110
I can't reproduce it either, but obviously, it's some annoying bug. Can you
investigate why it is happening?
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Comment #5 on issue 1475 by asmeurer: New implementation of .eval in
trigonometric functions, implementing sec, csc
http://code.google.com/p/sympy/issues/detail?id=1475
Well, if no one else does it, I will have to eventually in order to make
the trigonometric integration work correctly in r
Comment #15 on issue 2041 by Vinzent.Steinberg: Doctest failures in Python
2.6.6
http://code.google.com/p/sympy/issues/detail?id=2041
Acknowledged.
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Comment #4 on issue 1475 by Vinzent.Steinberg: New implementation of .eval
in trigonometric functions, implementing sec, csc
http://code.google.com/p/sympy/issues/detail?id=1475
We'll see, I'm extremely short on time since I started to study physics.
But occasionally I could use good trigon
Comment #14 on issue 2041 by asmeurer: Doctest failures in Python 2.6.6
http://code.google.com/p/sympy/issues/detail?id=2041
It looks like Python 2.7.1 has also inherited this problem.
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Comment #1 on issue 2110 by asmeurer: failing tests
http://code.google.com/p/sympy/issues/detail?id=2110
As I said on the mailing list, I can't reproduce this. Can you somehow see
if it is similar to issue 1946 (that's the only thing that comes to mind)?
Also, bisecting to a bad commit woul
Comment #3 on issue 1181 by asmeurer: Advanced trigonometric simplification
http://code.google.com/p/sympy/issues/detail?id=1181
Maybe we should add a flag to trigsimp (not sure what it should be called)
that just implements this simple simplification. This method can, I think,
be very inef
Comment #3 on issue 1475 by asmeurer: New implementation of .eval in
trigonometric functions, implementing sec, csc
http://code.google.com/p/sympy/issues/detail?id=1475
Cool. Do you plan on working on this?
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