Hi David,
Can you open an issue on Github please. That's a bug that should be fixed.
Oscar
On Tue, 20 Aug 2019 at 21:08, David Bailey wrote:
>
> It seems as though the symbolic integration process fails when it can't find
> a solution:
>
> integrate(sin(x**n),x)
> Traceback (most recent call
"TypeError: cannot determine truth value of Relational" generally
indicates a bug in SymPy. And yes, integrate() should always return
unevaluated when it can't compute the integral.
Aaron Meurer
On Tue, Aug 20, 2019 at 2:08 PM David Bailey wrote:
>
> It seems as though the symbolic integration
It seems as though the symbolic integration process fails when it can't
find a solution:
integrate(sin(x**n),x)
Traceback (most recent call last):
File "", line 1, in
File
"C:\SymPyWorkbook\lib\site-packages\sympy\integrals\integrals.py", line
1477, in integrate
return
On Tuesday, August 20, 2019 at 5:43:40 PM UTC+3, Oscar wrote:
>
> Can you open an issue on Github for this?
>
>
Sure: https://github.com/sympy/sympy/issues/17461
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It seems that evalf of atan2 currently expects that its arguments are real.
For symbols like x and y, this
means that they have to be initialized with `real=True`. It does not
suffice that evalf would return a real
value as assumption code does not try to run evalf.
Kalevi Suominen
On Tuesday,
There's a "return" missing:
$ git diff
diff --git a/sympy/functions/elementary/trigonometric.py
b/sympy/functions/elementary/trigonometric.py
index 635e7f2..b7a0ad1 100644
--- a/sympy/functions/elementary/trigonometric.py
+++ b/sympy/functions/elementary/trigonometric.py
@@ -3070,4 +3070,4 @@ def
I've been trying to use sympy.Symbol to implement a system where the
numerical value of a symbolic quantity is only fixed when it is evaluated
using evalf().
To accomplish this I've redefined _eval_evalf() to return the
aforementioned value (a fixed 5.0 in the toy example below).
This works
