Re: Issue 3581 in sympy: Implement arg.rewrite(atan2)

2013-03-31 Thread sympy
Comment #6 on issue 3581 by khageshp...@gmail.com: Implement arg.rewrite(atan2) http://code.google.com/p/sympy/issues/detail?id=3581 Sir can you please tell me what exactly we want to achieve here? For example arg(3+2*I)already returns atan(2/3) and to get its numeric value we can simply

Re: Issue 3715 in sympy: ufuncify with logarithms

2013-03-31 Thread sympy
Comment #11 on issue 3715 by t.hi...@gmail.com: ufuncify with logarithms http://code.google.com/p/sympy/issues/detail?id=3715 This depends on the used compiler. I assume that most compilers, especially gfortran, are clever enough to evaulate such expressions at compile time. See

Re: Issue 3656 in sympy: Fancy indexing in Matrix

2013-03-31 Thread sympy
Comment #7 on issue 3656 by khageshp...@gmail.com: Fancy indexing in Matrix http://code.google.com/p/sympy/issues/detail?id=3656 https://github.com/sympy/sympy/pull/1954 -- You received this message because this project is configured to send all issue notifications to this address. You may

Re: Issue 3729 in sympy: integrate fail

2013-03-31 Thread sympy
Comment #2 on issue 3729 by smi...@gmail.com: integrate fail http://code.google.com/p/sympy/issues/detail?id=3729 Until that is fixed, integrate(nsimplify(1/(1.08*x**2-4.3)), x) 5*sqrt(1290)*log(x - sqrt(1290)/18)/774 - 5*sqrt(1290)*log(x + sqrt(1290)/18)/77 4 -- You received this

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

2013-03-31 Thread sympy
Updates: Labels: NeedsReview smichr Comment #2 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 https://github.com/sympy/sympy/pull/1925 -- You received this message because this

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

2013-03-31 Thread sympy
Comment #1 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 https://github.com/sympy/sympy/pull/1925 -- You received this message because this project is configured to send all issue

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

2013-03-31 Thread sympy
Updates: Cc: matt...@gmail.com Comment #4 on issue 3721 by smi...@gmail.com: solve should handle more than one abs http://code.google.com/p/sympy/issues/detail?id=3721 from sympy.solvers.inequalities import reduce_inequalities as ri ri(abs(x-3)-2*(x+1)) Traceback (most recent call

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

2013-03-31 Thread sympy
Updates: Labels: NeedsReview smichr Comment #5 on issue 3721 by smi...@gmail.com: solve should handle more than one abs http://code.google.com/p/sympy/issues/detail?id=3721 https://github.com/sympy/sympy/pull/1925 -- You received this message because this project is configured to

Re: Issue 3581 in sympy: Implement arg.rewrite(atan2)

2013-03-31 Thread sympy
Comment #7 on issue 3581 by khageshp...@gmail.com: Implement arg.rewrite(atan2) http://code.google.com/p/sympy/issues/detail?id=3581 Do we mean this: In[1]: x, y = Symbol('x', real=True), Symbol('y') In[2]: arg(x+y*I).rewrite(atan2) Out[1]: atan2(re(y),x-im(y)) -- You received this message

Re: Issue 1234 in sympy: solve() should give all solutions

2013-03-31 Thread sympy
Comment #7 on issue 1234 by smi...@gmail.com: solve() should give all solutions http://code.google.com/p/sympy/issues/detail?id=1234 Could infinite solutions be represented as an iterator? # solutions to cos(x) = 0 sol = (pi/2 + m*pi for m in S.Naturals0) for i in range(3): ... arg =