Updates:
Status: Fixed
Comment #3 on issue 996 by mattpap: bad integration of 1/(1 + x**2)
http://code.google.com/p/sympy/issues/detail?id=996
This issue was fixed together with #636:
In [1]: integrate(1/(x**2+1), x)
Out[1]: atan(x)
In [2]: integrate(1/(1+x**2), (x, -oo, oo))
Out[2]: π
Updates:
Status: Fixed
Comment #14 on issue 687 by mattpap: integrate(1/(1+x**5), x) could be made
simpler by using atan
http://code.google.com/p/sympy/issues/detail?id=687
This issue was fixed together with #636.
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Comment #13 on issue 339 by fab...@fseoane.net: Series and expand as
functions
http://code.google.com/p/sympy/issues/detail?id=339
I'm concentrating on the new assumption system, so I leave this unassigned
in case
someone in interesed
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Updates:
Status: Fixed
Comment #7 on issue 1182 by mattpap: global variable 'cubic' undefined in
sympy/polys/rootfinding.py
http://code.google.com/p/sympy/issues/detail?id=1182
This issue was fixed long ago. Moreover, support for Real arguments was
added in:
http://git.sympy.or
Updates:
Status: Fixed
Owner: ---
Comment #15 on issue 636 by mattpap: integrate(1/(x**2+1)) should return
arctan(x)
http://code.google.com/p/sympy/issues/detail?id=636
This issue was fixed by merging 'ratint' branch:
http://git.sympy.org/?p=sympy.git;a=commit;h=c5e6ef1eb
Updates:
Status: Fixed
Labels: -NeedsReview
Comment #4 on issue 1313 by mattpap: poly_gcd should not be exported as a
top-level function
http://code.google.com/p/sympy/issues/detail?id=1313
Thanks for review. This is now:
http://git.sympy.org/?p=sympy.git;a=commit;h=ca55e
Updates:
Status: Fixed
Comment #3 on issue 953 by mattpap: integrate(cos(asin(x))) cannot do it
http://code.google.com/p/sympy/issues/detail?id=953
A test for this issue was pushed as:
http://git.sympy.org/?p=sympy.git;a=commit;h=dbcc212fdc1a26bce79126b8ab1c370ec8bbf14a
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Comment #5 on issue 1308 by ondrej.certik: simplify gives error on
expressions containing exp()
http://code.google.com/p/sympy/issues/detail?id=1308
Great job! So that's it -- the _eval_power() is being called with 1/2 as
the "b"
argument, but there should be an exponential in that argument.
Status: New
Owner:
Labels: Type-Defect Priority-Medium
New issue 1315 by johann.cohentanugi: Lane-Emden equation returns wrong
solution for n=1, and in general is not supported
http://code.google.com/p/sympy/issues/detail?id=1315
for n=1 :
In [14]: dsolve(f(x).diff(x, x)+2/x*f(x).diff(x)+f
Updates:
Status: Verified
Comment #15 on issue 687 by ondrej.certik: integrate(1/(1+x**5), x) could
be made simpler by using atan
http://code.google.com/p/sympy/issues/detail?id=687
In [1]: integrate(1/(1+x**5), x)
Out[1]:
⎛ ⎽⎽⎽⎞⎛ ⎛⎽⎽⎽⎞ ⎞ ⎛
Status: Accepted
Owner:
CC: mattpap
Labels: Type-Defect Priority-Medium Priority-Critical Milestone-Release0.6.4
New issue 1316 by ondrej.certik: -Qnew tests fail
http://code.google.com/p/sympy/issues/detail?id=1316
The new patch series don't run all tests:
http://buildbot.sympy.org/waterf
Updates:
Status: Accepted
Comment #1 on issue 1315 by ondrej.certik: Lane-Emden equation returns
wrong solution for n=1, and in general is not supported
http://code.google.com/p/sympy/issues/detail?id=1315
Thanks for the bug report. dsolve() failed to determine the type of
equation a
Status: New
Owner:
Labels: Type-Defect Priority-Medium
New issue 1317 by johann.cohentanugi: Wild/match does not discard x
correctly
http://code.google.com/p/sympy/issues/detail?id=1317
r = eq.match(a*f(x).diff(x,x) + b*diff(f(x),x) + c*f(x))
a = Wild('a', exclude=[x])
b = Wild('b', exclud
Updates:
Owner: mattpap
Comment #1 on issue 1316 by mattpap: -Qnew tests fail
http://code.google.com/p/sympy/issues/detail?id=1316
I didn't notice this (it was off the screen :). I will look into it in a
minute.
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Updates:
Status: Fixed
Owner: ---
Cc: -mattpap
Labels: -Priority-Critical -Milestone-Release0.6.4
Comment #2 on issue 1316 by mattpap: -Qnew tests fail
http://code.google.com/p/sympy/issues/detail?id=1316
I went ahead and committed a trivial fix to this issue:
ht
Updates:
Status: Verified
Comment #3 on issue 1316 by ondrej.certik: -Qnew tests fail
http://code.google.com/p/sympy/issues/detail?id=1316
Thanks, now everything passes.
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Status: New
Owner:
Labels: Type-Defect Priority-Medium
New issue 1318 by jorn.baayen: Interval arithmetic support
http://code.google.com/p/sympy/issues/detail?id=1318
It would be great if sympy would support mpmath's interval arithmetic
class, mpi, so that one could do something like:
f=x*
Comment #6 on issue 1308 by plaes800: simplify gives error on expressions
containing exp()
http://code.google.com/p/sympy/issues/detail?id=1308
OK, finally cracked it, thanks for all the support. I have put patch here,
please
comment.
http://plaes.org/files/2009-Q1/sympy-exp-simplification.
Updates:
Status: Accepted
Comment #1 on issue 1318 by ondrej.certik: Interval arithmetic support
http://code.google.com/p/sympy/issues/detail?id=1318
Yes, I agree.
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Updates:
Status: Started
Owner: ondrej.certik
Comment #7 on issue 1308 by ondrej.certik: simplify gives error on
expressions containing exp()
http://code.google.com/p/sympy/issues/detail?id=1308
Great job! The patch is +1. I'll merge it soon.
I added you to the google code pro
Comment #8 on issue 1308 by plaes800: simplify gives error on expressions
containing exp()
http://code.google.com/p/sympy/issues/detail?id=1308
Version 2 of the patch. The Mul part of this previously fixed if-else chain
looked
also fishy so I managed to write a test that broke it ;)
With th
Comment #6 on issue 1309 by ondrej.certik: implement backward chaining for
rules
http://code.google.com/p/sympy/issues/detail?id=1309
Thanks, I'll try to have a look at it in the plane.
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