Issue 1421 in sympy: QRdecomposition fails for some matrices

Comment #4 on issue 1421 by Vinzent.Steinberg: QRdecomposition fails for some matrices http://code.google.com/p/sympy/issues/detail?id=1421 Yep, probably you are right. Currently sympy does exact linear algebra (if you use Rational()), so QRsolve is mainly of educational interest. :) If I

Issue 1419 in sympy: integrate(x/(x**2-9), x) gives wrong answers

Updates: Status: Verified Comment #7 on issue 1419 by plaes800: integrate(x/(x**2-9), x) gives wrong answers http://code.google.com/p/sympy/issues/detail?id=1419 Fixed in ce61f8d057e46b36dc2cd879891e74a7f9320201 by Mateusz including following testcase: def test_ratint_logpart():

Issue 1421 in sympy: QRdecomposition fails for some matrices

Comment #5 on issue 1421 by Vinzent.Steinberg: QRdecomposition fails for some matrices http://code.google.com/p/sympy/issues/detail?id=1421 Yep, probably you are right. Currently sympy does exact linear algebra (if you use Rational()), so QRsolve is mainly of educational interest. :) If I

Issue 1416 in sympy: integrate((x**3 - x)/ (x - 1), x) gives traceback

Updates: Status: Verified Comment #2 on issue 1416 by plaes800: integrate((x**3 - x)/ (x - 1), x) gives traceback http://code.google.com/p/sympy/issues/detail?id=1416 Commited as ce61f8d057e46b36dc2cd879891e74a7f9320201 by Mateusz -- You received this message because you are listed

Issue 1406 in sympy: solve solves b*a**x-y, y-b*a**x, or y-a**x for x but not a**x-y

Updates: Status: Accepted Owner: plaes800 Labels: Solvers Comment #1 on issue 1406 by plaes800: solve solves b*a**x-y, y-b*a**x, or y-a**x for x but not a**x-y http://code.google.com/p/sympy/issues/detail?id=1406 This has been fixed already, just needs testcase before

Issue 1420 in sympy: subs() seems to fail against D(x(t), t)

Comment #8 on issue 1420 by 2006.Uchida: subs() seems to fail against D(x(t), t) http://code.google.com/p/sympy/issues/detail?id=1420 Can I ask you a question here? I made some codes which allows you to create motion equations of dynamics in sympy. Where can I share my a little work with

Issue 1420 in sympy: subs() seems to fail against D(x(t), t)

Comment #9 on issue 1420 by ondrej.certik: subs() seems to fail against D(x(t), t) http://code.google.com/p/sympy/issues/detail?id=1420 Please send an email to: http://groups.google.com/group/sympy also checkout pydy: http://code.google.com/p/pydy/ -- You received this message because you

Issue 1188 in sympy: integrate(1/sin(x)**2,x) fails

Updates: Status: PassedReview Comment #14 on issue 1188 by ondrej.certik: integrate(1/sin(x)**2,x) fails http://code.google.com/p/sympy/issues/detail?id=1188 I think this patch is ok. I'll push it in soon. -- You received this message because you are listed in the owner or CC fields of