Is this a known bug with integral()
I've tried to compute the following integral wth integral() in a SageMathCloud worksheet: ∫π/6−π/6cosx1+sinxdx.
The output was an error message (saying the integral is divergent), just like the one I got in SageMathCell (see link): https://sagecell.sagemath.org/?z=eJzz...
So I tried with integrate() and with numerical_integral() as well. I was never able to obtain the value of this integral, which turns out to be ln(3) after an obvious substitution.
Is this a bug?
Note that replacing 1 by 1.1 yields this: https://sagecell.sagemath.org/?z=eJzz...
while we get that when replacing 1 by 2: https://sagecell.sagemath.org/?z=eJzz...