Comment #13 on issue 2949 by asmeu...@gmail.com: trig functions do not
return exact results for half angles
http://code.google.com/p/sympy/issues/detail?id=2949
Issue 705 has been merged into this issue.
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Status: Started
Comment #12 on issue 2949 by julien.r...@gmail.com: trig functions do not
return exact results for half angles
http://code.google.com/p/sympy/issues/detail?id=2949
Looks like this is https://github.com/sympy/sympy/issues/1503
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Comment #10 on issue 2949 by trel...@psu.edu: trig functions do not return
exact results for half angles
http://code.google.com/p/sympy/issues/detail?id=2949
All right. I'll see what I can do. Attached is a working version of
trigonometry.py that can handle potentially handle all
Comment #11 on issue 2949 by asmeu...@gmail.com: trig functions do not
return exact results for half angles
http://code.google.com/p/sympy/issues/detail?id=2949
I think sin(oo) used to return nan but now just remains unevaluated. That
test can be removed.
For simplification, try
Comment #8 on issue 2949 by trel...@psu.edu: trig functions do not return
exact results for half angles
http://code.google.com/p/sympy/issues/detail?id=2949
I ran into a problem evaluating cos(pi/12) the other day, and came accross
this issue when trying to determine how best to proceed.
Updates:
Labels: Simplify
Comment #9 on issue 2949 by asmeu...@gmail.com: trig functions do not
return exact results for half angles
http://code.google.com/p/sympy/issues/detail?id=2949
Memoizing results is fine if it would otherwise be too slow (exponential
time). See the
Comment #5 on issue 2949 by someb...@bluewin.ch: trig functions do not
return exact results for half angles
http://code.google.com/p/sympy/issues/detail?id=2949
A more complete routine to compute more (all) exact values for the
various trig. functions is on my todo plan. I think that the
Comment #6 on issue 2949 by asmeu...@gmail.com: trig functions do not
return exact results for half angles
http://code.google.com/p/sympy/issues/detail?id=2949
Well, if you can compute sin(a), then you can compute sin(a/2) using the
half angle formula, and visa-versa. This leads to an
Status: New
Owner:
Labels: Type-Defect Priority-Medium
New issue 2949 by waks...@gwax.com: trig functions do not return exact
results for half angles
http://code.google.com/p/sympy/issues/detail?id=2949
trig functions should become exact results for half angles
sin(pi / 12) == sqrt((1
Updates:
Status: Accepted
Comment #1 on issue 2949 by asmeu...@gmail.com: trig functions do not
return exact results for half angles
http://code.google.com/p/sympy/issues/detail?id=2949
What exact forms of fractional multiples of pi can be computed exactly?
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Comment #2 on issue 2949 by pr...@goodok.ru: trig functions do not return
exact results for half angles
http://code.google.com/p/sympy/issues/detail?id=2949
Many, but they can have big length of the algebraic expression.
http://mathworld.wolfram.com/TrigonometryAngles.html
With SEE ALSO
Updates:
Labels: -Type-Defect Type-Enhancement Polynomial
Comment #3 on issue 2949 by asmeu...@gmail.com: trig functions do not
return exact results for half angles
http://code.google.com/p/sympy/issues/detail?id=2949
Well, that's not a big deal, because you can compute it from the
Issue 2949: trig functions do not return exact results for half angles
http://code.google.com/p/sympy/issues/detail?id=2949
This issue is now blocking issue 966.
See http://code.google.com/p/sympy/issues/detail?id=966
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