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

2013-03-28 Thread sympy
Updates: Labels: -Type-Defect Type-Enhancement Solvers Comment #1 on issue 3722 by asmeu...@gmail.com: solve can try split equation into real and imaginary parts http://code.google.com/p/sympy/issues/detail?id=3722 That's a great idea. When should it be tried? Always? When the variabl

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

2013-03-28 Thread sympy
Status: Valid Owner: Labels: Type-Defect Priority-Medium New 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 The following does not resolve into a solution for x and y var('x y', real=True)

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

2013-03-28 Thread sympy
Status: Valid Owner: Labels: Type-Defect Priority-Medium New issue 3721 by smi...@gmail.com: solve should handle more than one abs http://code.google.com/p/sympy/issues/detail?id=3721 Although solve handles one abs, solve(abs(2*x+5),x) [-5/2] it fails for multiple abs: solve(abs(2*x+5

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

2013-03-28 Thread sympy
Status: Valid Owner: Labels: Type-Defect Priority-Medium New 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 var('a,b,c,d',positive=True) (a, b, c, d) solve(a*b**x-c*d**x, x) Traceb

Issue 3719 in sympy: checksol seems to hang when checking solutions of this eq:

2013-03-28 Thread sympy
Status: Valid Owner: Labels: Type-Defect Priority-Medium Solvers New issue 3719 by smi...@gmail.com: checksol seems to hang when checking solutions of this eq: http://code.google.com/p/sympy/issues/detail?id=3719 print filldedent(eq) sqrt(Abs(-5*x*(0.19*x*y + 0.05*y)/(x**2 + 25) + (1

Re: Issue 1590 in sympy: Reduce powers of sin's and cos's to multi-argument functions

2013-03-28 Thread sympy
Comment #5 on issue 1590 by smi...@gmail.com: Reduce powers of sin's and cos's to multi-argument functions http://code.google.com/p/sympy/issues/detail?id=1590 from sympy.simplify.fu import * TR7(TR5(eq)) # which is shorter than expand_sincos_powers(eq) But if you use it a lot you can mak

Re: Issue 3496 in sympy: Assumptions known_facts only apply to atomic expressions

2013-03-28 Thread sympy
Comment #2 on issue 3496 by mrock...@gmail.com: Assumptions known_facts only apply to atomic expressions http://code.google.com/p/sympy/issues/detail?id=3496 How are you forming X and Y? This is from the current master branch mrocklin@notebook:~/workspace/sympy$ git pull sympy master mrockl

Re: Issue 3496 in sympy: Assumptions known_facts only apply to atomic expressions

2013-03-28 Thread sympy
Comment #1 on issue 3496 by rishabhd...@gmail.com: Assumptions known_facts only apply to atomic expressions http://code.google.com/p/sympy/issues/detail?id=3496 I am getting None even for ask(Q.lower_triangular(X+Y), Q.lower_triangular(X) & Q.lower_triangular(Y)): print ask(Q.lower_triang

Re: Issue 3662 in sympy: Sum and Integral (and possibly Product) should have a common superclass

2013-03-28 Thread sympy
Issue 3662: Sum and Integral (and possibly Product) should have a common superclass http://code.google.com/p/sympy/issues/detail?id=3662 This issue is now blocking issue sympy:2214. See http://code.google.com/p/sympy/issues/detail?id=2214 -- You received this message because you are listed in

Re: Issue 2214 in sympy: representation of Sum and Integral should be unified

2013-03-28 Thread sympy
Updates: Blockedon: sympy:3662 Comment #8 on issue 2214 by asmeu...@gmail.com: representation of Sum and Integral should be unified http://code.google.com/p/sympy/issues/detail?id=2214 (No comment was entered for this change.) -- You received this message because this project is conf

Re: Issue 3703 in sympy: Sum of a finite power series performs automatic reduction which is not always valid

2013-03-28 Thread sympy
Updates: Status: Fixed Comment #8 on issue 3703 by asmeu...@gmail.com: Sum of a finite power series performs automatic reduction which is not always valid http://code.google.com/p/sympy/issues/detail?id=3703 That was merged. If you find any other instances where summation should rea