Issue 3890 in sympy: dsolve failing for an equality muliplied by -1

Status: New Owner: Labels: Type-Defect Priority-Medium New issue 3890 by bjo...@gmail.com: dsolve failing for an equality muliplied by -1 http://code.google.com/p/sympy/issues/detail?id=3890 In [1]: dsolve(f(x).diff(x)-x*exp(-k*x),f(x)) Out[1]: ⎛⎧ 2

Re: Issue 3812 in sympy: simplify(Implies) is wrong

Comment #6 on issue 3812 by srjoglek...@gmail.com: simplify(Implies) is wrong http://code.google.com/p/sympy/issues/detail?id=3812 https://github.com/sympy/sympy/pull/2175 -- You received this message because this project is configured to send all issue notifications to this address. You

Re: Issue 3889 in sympy: expand_log(exp(x), force=True) should give x

Comment #1 on issue 3889 by ch...@kisc.edu.np: expand_log(exp(x), force=True) should give x http://code.google.com/p/sympy/issues/detail?id=3889 Pow, but not exp, is recognized. The attached patch fixes it. expand(log(exp(x)),force=1) x Attachments: a.patch 932 bytes -- You

Re: Issue 3887 in sympy: sympy 0.7.2 hangs when trying to solve a simple algebraic equation

Comment #2 on issue 3887 by ch...@kisc.edu.np: sympy 0.7.2 hangs when trying to solve a simple algebraic equation http://code.google.com/p/sympy/issues/detail?id=3887 after Floats are replaced with Rationals, a failure occurs when trying to convert the expression to a Poly: e

Re: Issue 2581 in sympy: Use Sphinx extensions from the SciPy 2011 tutorial in our docs

Comment #2 on issue 2581 by a...@hirzel.us: Use Sphinx extensions from the SciPy 2011 tutorial in our docs http://code.google.com/p/sympy/issues/detail?id=2581 What is the status of this issue now? I would like to work it if we can pin down what extensions to investigate/implement. Note

Re: Issue 2891 in sympy: error when compiling docs

Comment #6 on issue 2891 by a...@hirzel.us: error when compiling docs http://code.google.com/p/sympy/issues/detail?id=2891 Seems like not. Close issue? -- You received this message because this project is configured to send all issue notifications to this address. You may adjust your

Re: Issue 2891 in sympy: error when compiling docs

Updates: Status: Fixed Comment #7 on issue 2891 by asmeu...@gmail.com: error when compiling docs http://code.google.com/p/sympy/issues/detail?id=2891 Docs have been building without errors for a while. -- You received this message because this project is configured to send all issue

Re: Issue 3520 in sympy: Identify and fix broken links in the docs

Comment #5 on issue 3520 by a...@hirzel.us: Identify and fix broken links in the docs http://code.google.com/p/sympy/issues/detail?id=3520 FYI, the count-inv link works as of this writing. -- You received this message because this project is configured to send all issue notifications to

Re: Issue 2581 in sympy: Use Sphinx extensions from the SciPy 2011 tutorial in our docs

Comment #3 on issue 2581 by asmeu...@gmail.com: Use Sphinx extensions from the SciPy 2011 tutorial in our docs http://code.google.com/p/sympy/issues/detail?id=2581 I'm actually not sure if we need the other two. I guess there is at least one place where we use IPython style output, where

Re: Issue 3520 in sympy: Identify and fix broken links in the docs

Updates: Status: Fixed Comment #6 on issue 3520 by asmeu...@gmail.com: Identify and fix broken links in the docs http://code.google.com/p/sympy/issues/detail?id=3520 Just some mpmath errors and false positives. -- You received this message because this project is configured to send

Re: Issue 3887 in sympy: sympy 0.7.2 hangs when trying to solve a simple algebraic equation

Updates: Labels: Polynomial Comment #3 on issue 3887 by asmeu...@gmail.com: sympy 0.7.2 hangs when trying to solve a simple algebraic equation http://code.google.com/p/sympy/issues/detail?id=3887 That's because it tries to make a 54240381056521 degree polynomial, which won't work

Issue 3891 in sympy: series expands functions with square roots of squares to too high a degree

Status: New Owner: Labels: Type-Defect Priority-Medium Series New issue 3891 by daveb...@gmail.com: series expands functions with square roots of squares to too high a degree http://code.google.com/p/sympy/issues/detail?id=3891 Asking for a simple third degree expansion of a square root

Re: Issue 2070 in sympy: All elements of .args should be Basic

Issue 2070: All elements of .args should be Basic http://code.google.com/p/sympy/issues/detail?id=2070 This issue is now blocking issue sympy:3890. See http://code.google.com/p/sympy/issues/detail?id=3890 -- You received this message because you are listed in the owner or CC fields of this

Re: Issue 3890 in sympy: dsolve failing for an equality muliplied by -1

Updates: Status: Valid Labels: Solvers Blockedon: sympy:2070 Comment #1 on issue 3890 by asmeu...@gmail.com: dsolve failing for an equality muliplied by -1 http://code.google.com/p/sympy/issues/detail?id=3890 In [12]: dsolve(-f(x).diff(x)+x*exp(-k*x),f(x))

Re: Issue 3858 in sympy: Calling subs() on a logical function sometimes returns bool type and sometimes sympy.core.numbers.Zero/One type

Comment #8 on issue 3858 by tadej.ja...@gmail.com: Calling subs() on a logical function sometimes returns bool type and sometimes sympy.core.numbers.Zero/One type http://code.google.com/p/sympy/issues/detail?id=3858 I'm confirming that both issues are fixed. Thanks for your help! -- You

Re: Issue 3889 in sympy: expand_log(exp(x), force=True) should give x

Updates: Status: Started Comment #2 on issue 3889 by asmeu...@gmail.com: expand_log(exp(x), force=True) should give x http://code.google.com/p/sympy/issues/detail?id=3889 Could you submit that as a pull request? See https://github.com/sympy/sympy/wiki/development-workflow or the

Re: Issue 3887 in sympy: sympy 0.7.2 hangs when trying to solve a simple algebraic equation

Comment #4 on issue 3887 by ch...@kisc.edu.np: sympy 0.7.2 hangs when trying to solve a simple algebraic equation http://code.google.com/p/sympy/issues/detail?id=3887 I see: Poly(exp(2*x)+3) Poly(exp(x)**2 + 3, exp(x), domain='ZZ') The generator is exp(x) and the expression is quadratic

Re: Issue 1172 in sympy: example: curve sketching

Updates: Status: Fixed Comment #19 on issue 1172 by smi...@gmail.com: example: curve sketching http://code.google.com/p/sympy/issues/detail?id=1172 (No comment was entered for this change.) -- You received this message because this project is configured to send all issue

Re: Issue 3878 in sympy: atan2 should be invertible by solve

Updates: Status: Fixed Comment #1 on issue 3878 by smi...@gmail.com: atan2 should be invertible by solve http://code.google.com/p/sympy/issues/detail?id=3878 (No comment was entered for this change.) -- You received this message because this project is configured to send all issue

Re: Issue 3722 in sympy: solve can try split equation into real and imaginary parts

Updates: Labels: -NeedsReview -smichr Comment #5 on issue 3722 by smi...@gmail.com: solve can try split equation into real and imaginary parts http://code.google.com/p/sympy/issues/detail?id=3722 1694 has been committed but the expressions in the previous comment aren't yet

Re: Issue 3721 in sympy: solve should handle more than one abs

Updates: Status: Fixed Comment #8 on issue 3721 by smi...@gmail.com: solve should handle more than one abs http://code.google.com/p/sympy/issues/detail?id=3721 (No comment was entered for this change.) -- You received this message because this project is configured to send all

Re: Issue 2830 in sympy: ode sol in terms of LambertW not simplified (was: checkodesol needs to use force)

Updates: Summary: ode sol in terms of LambertW not simplified (was: checkodesol needs to use force) Labels: -NeedsReview -smichr Comment #15 on issue 2830 by smi...@gmail.com: ode sol in terms of LambertW not simplified (was: checkodesol needs to use force)

Re: Issue 3149 in sympy: solve() could attempt logcombine when looking for solutions

Updates: Status: Fixed Comment #12 on issue 3149 by smi...@gmail.com: solve() could attempt logcombine when looking for solutions http://code.google.com/p/sympy/issues/detail?id=3149 (No comment was entered for this change.) -- You received this message because this project is

Re: Issue 3720 in sympy: powsimp should be attempted for multiple generators case in solve

Updates: Status: Fixed Comment #5 on issue 3720 by smi...@gmail.com: powsimp should be attempted for multiple generators case in solve http://code.google.com/p/sympy/issues/detail?id=3720 (No comment was entered for this change.) -- You received this message because this project is

Re: Issue 3844 in sympy: rewriting of trigonometric functions needs to be more robust in solve

Updates: Status: Fixed Comment #1 on issue 3844 by smi...@gmail.com: rewriting of trigonometric functions needs to be more robust in solve http://code.google.com/p/sympy/issues/detail?id=3844 (No comment was entered for this change.) -- You received this message because this project

Re: Issue 3844 in sympy: rewriting of trigonometric functions needs to be more robust in solve

Comment #2 on issue 3844 by smi...@gmail.com: rewriting of trigonometric functions needs to be more robust in solve http://code.google.com/p/sympy/issues/detail?id=3844 solve(sin(x)+sec(x)) [-2*atan(-1/2 + sqrt(2 - 2*sqrt(3)*I)/2 + sqrt(3)*I/2), 2*atan(1/2 - sqrt(3)*I/2 + sqrt(2 -

Re: Issue 3845 in sympy: dsolve gives different answers

Updates: Status: Fixed Comment #2 on issue 3845 by smi...@gmail.com: dsolve gives different answers http://code.google.com/p/sympy/issues/detail?id=3845 (No comment was entered for this change.) -- You received this message because this project is configured to send all issue

Re: Issue 3891 in sympy: series expands functions with square roots of squares to too high a degree

Comment #2 on issue 3891 by daveb...@gmail.com: series expands functions with square roots of squares to too high a degree http://code.google.com/p/sympy/issues/detail?id=3891 Thanks. Playing around with it, calling series twice gets rid of the extra terms too:

Re: Issue 3883 in sympy: powdenest should not do too much

Comment #2 on issue 3883 by asmeu...@gmail.com: powdenest should not do too much http://code.google.com/p/sympy/issues/detail?id=3883 Similarly, the other power functions should not do denesting: In [19]: var('a b c', positive=True) Out[19]: (a, b, c) In [20]: expand_power_base((a**b)**(c

Issue 3892 in sympy: powdenest won't denest a product base (even with force=True)

Status: Valid Owner: Labels: Type-Defect Priority-Medium Simplify New issue 3892 by asmeu...@gmail.com: powdenest won't denest a product base (even with force=True) http://code.google.com/p/sympy/issues/detail?id=3892 In [19]: var('a b c', positive=True) Out[19]: (a, b, c) In [22]:

Re: Issue 3872 in sympy: Wrong printing in SymPy Live

Updates: Cc: li.david...@gmail.com Comment #1 on issue 3872 by asmeu...@gmail.com: Wrong printing in SymPy Live http://code.google.com/p/sympy/issues/detail?id=3872 If you remove the del l, and then print what l is, it corresponds to the wrong result. So maybe something was done

Re: Issue 3872 in sympy: Wrong printing in SymPy Live

Comment #2 on issue 3872 by li.david...@gmail.com: Wrong printing in SymPy Live http://code.google.com/p/sympy/issues/detail?id=3872 At least with the shuffle...Every time you execute l, a different result returns, making me think an unpicklable is making Live reevaluate the shuffle for

Re: Issue 3872 in sympy: Wrong printing in SymPy Live

Comment #3 on issue 3872 by li.david...@gmail.com: Wrong printing in SymPy Live http://code.google.com/p/sympy/issues/detail?id=3872 There's another bug, if a print statement is part of a statement that creates an unpicklable, when that statement is reevaluated, the print statement