Status: Accepted
Owner: smichr
Labels: Type-Defect Priority-Medium
New issue 1986 by smichr: cse eats derivatives
http://code.google.com/p/sympy/issues/detail?id=1986
f(x).diff(x)+sqrt(1-f(x))+3/(1-f(x))
D(f(x), x) + (1 - f(x))**(1/2) + 3/(1 - f(x))
cse(_)
([(x0, f(x)), (x1, 1 - x0)],
Updates:
Status: Fixed
Labels: -NeedsReview
Comment #19 on issue 415 by ronan.l...@gmail.com: sqrt(6)/2*sqrt(2) does
not auto-simplify properly
http://code.google.com/p/sympy/issues/detail?id=415
It seems this had been forgotten. I'm +1 and it rebases cleanly, so I've
Comment #12 on issue 1924 by ronan.l...@gmail.com: Eq() gets .as_basic()
method
http://code.google.com/p/sympy/issues/detail?id=1924
What I'm saying is that Poly shouldn't have an .as_basic() method.
as_expr might be a better name, but there is a problem: there's no reason
for the members
Updates:
Labels: -NeedsReview PassedReview
Comment #4 on issue 1795 by ronan.l...@gmail.com: cartes(ian) product
updated
http://code.google.com/p/sympy/issues/detail?id=1795
Looks good.
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Comment #13 on issue 1924 by Vinzent.Steinberg: Eq() gets .as_basic() method
http://code.google.com/p/sympy/issues/detail?id=1924
Feel free to propose a better name. :) I don't really like as_expr(), but
it's the best name I could think of. And the purpose is indead to have Expr
instances.
Comment #14 on issue 1924 by smichr: Eq() gets .as_basic() method
http://code.google.com/p/sympy/issues/detail?id=1924
Like this?
Eq(Eq(x,3),Eq(x,0))
(x == 3) == (x == 0)
A further problem I see with giving Eq this method is that, whereas Poly by
definition is something = 0, Eq is not. So
Status: Accepted
Owner: asmeurer
Labels: Type-Defect Priority-Medium Integration WrongResult
New issue 1987 by asmeurer: Integral(f(x), (x, g(x), h(x))).diff(x)
incorrectly returns 0
http://code.google.com/p/sympy/issues/detail?id=1987
In [1]: i = Integral(f(x), (x, g(x), h(x)))
In [2]:
Comment #2 on issue 1987 by smichr: Integral(f(x), (x, g(x),
h(x))).diff(x) incorrectly returns 0
http://code.google.com/p/sympy/issues/detail?id=1987
The t branch also corrects the behavior for the integral with only one
limit, e.g. Integral(x, (y, sin(x))).diff(x) now works.
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Status: Accepted
Owner: asmeurer
Labels: Type-Defect Priority-Medium Printing
New issue 1988 by asmeurer: Fix printing of matrices with 0 rows or columns
http://code.google.com/p/sympy/issues/detail?id=1988
I have a patch being prepared in my integration3 branch that fixes printing
of
Status: Started
Owner: asmeurer
Labels: Type-Enhancement Priority-Medium Milestone-Release0.7.0
New issue 1989 by asmeurer: Remove depricated Matrix functions
http://code.google.com/p/sympy/issues/detail?id=1989
zero(), zeronm() (both methods of Matrix and functions), and one() all
raise
Status: Accepted
Owner: asmeurer
Labels: Type-Defect Priority-Medium Matrices
New issue 1990 by asmeurer: Matrix inconsistencies
http://code.google.com/p/sympy/issues/detail?id=1990
In [1]: Matrix([[1], [2]])
Out[1]:
⎡1⎤
⎢ ⎥
⎣2⎦
In [2]: Matrix([1, 2])
Out[2]:
⎡1⎤
⎢ ⎥
⎣2⎦
To me, one should
Updates:
Cc: smichr
Comment #12 on issue 458 by asmeurer: radsimp() makes expressions more
complex.
http://code.google.com/p/sympy/issues/detail?id=458
Chris, do your radsimp() changes in t (commit from issue 1825) fix any of
this? Or is that issue a duplicate of this one?
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Comment #1 on issue 1990 by asmeurer: Matrix inconsistencies
http://code.google.com/p/sympy/issues/detail?id=1990
See issue 884 (which is possibly a duplicate, I haven't looked to deeply).
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Updates:
Summary: Matrix doesn't work with Eq
Labels: Matrices
Comment #3 on issue 931 by asmeurer: Matrix doesn't work with Eq
http://code.google.com/p/sympy/issues/detail?id=931
msolve() is not nsolve(). Now, I get
In [7]: x1 = Symbol('x_1')
In [8]: x2 = Symbol('x_2')
In
Updates:
Labels: Matrices
Comment #1 on issue 1989 by asmeurer: Remove depricated Matrix functions
http://code.google.com/p/sympy/issues/detail?id=1989
Possibly related: issue 1633.
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Updates:
Labels: Matrices
Comment by asmeurer:
(No comment was entered for this change.)
Affected issues:
issue 16: objects with indices (tensors)
http://code.google.com/p/sympy/issues/detail?id=16
issue 182: Plot linear maps
Comment #4 on issue 825 by asmeurer: SYMPY_USE_CACHE=no py.test sympy/
results
http://code.google.com/p/sympy/issues/detail?id=825
Issue 1252 has been merged into this issue.
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Updates:
Status: Duplicate
Mergedinto: 825
Comment #2 on issue 1252 by asmeurer: tests fails with cache turned off
http://code.google.com/p/sympy/issues/detail?id=1252
(No comment was entered for this change.)
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Updates:
Status: Fixed
Labels: Integration
Comment #1 on issue 1130 by asmeurer: test_heurisch_symbolic_coeffs
inconsistently fails
http://code.google.com/p/sympy/issues/detail?id=1130
I don't understand what the OP means as to how this was failing for him.
Anyway, it
Updates:
Cc: -mattpap
Labels: Integration
Comment #6 on issue 1201 by asmeurer: better tan(x**2).diff(x)
http://code.google.com/p/sympy/issues/detail?id=1201
I think functions like tan(x) should have tan(x).diff(x) return sec(x)**2
or cos(x)**-2, and have a special
Updates:
Status: Duplicate
Mergedinto: 1827
Comment #5 on issue 980 by asmeurer: log(8)/log(2) should automatically
simplify to 3
http://code.google.com/p/sympy/issues/detail?id=980
This would be solved by issue 1827 (merging into that issue because it has
more comments).
Comment #14 on issue 1827 by asmeurer: log eval gives more standard form
http://code.google.com/p/sympy/issues/detail?id=1827
Issue 980 has been merged into this issue.
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Comment #15 on issue 1827 by asmeurer: log eval gives more standard form
http://code.google.com/p/sympy/issues/detail?id=1827
Whatever was the decision on this? I think log(sqf_integer**int) should
automatically evaluate to int*log(sqf_integer), with a limit on factorint()
just as in
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