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2019-04-10 00:56:34 +0200 | asked a question | Elliptic Integral Bug? Hi, How did Sage come up with a nice answer when being asked to compute the following elliptic integral of the second kind? $$\int \sqrt{1-(1/2)\sin^2(x)}dx$$ Using Here is the link. Is it my maths, or is it bug? Thanks, Julien |

2018-03-19 16:35:06 +0200 | asked a question | Error when making it a function This code works for my 3d graph. But when I turn it into a function for an @interact, it does not work anymore. How can I fix this? Thanks. Edit: here is the code: |

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2015-10-22 02:24:13 +0200 | commented answer | How to use matrices with @interact thanks a lot. |

2015-10-21 02:00:58 +0200 | commented answer | How to use matrices with @interact thanks @kcrisman: if possible, I was hoping for a ready-made command because I have not been able to adapt the documentation I found (including the one you refer to) about input_grid to this context. I really tried before asking. |

2015-10-21 01:18:34 +0200 | commented answer | How to use matrices with @interact It works, thanks. Do you know how to use input_grid in this context? |

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2015-10-20 22:50:23 +0200 | asked a question | How to use matrices with @interact I found the following example here. Unlike the other examples I've tried, this one does not work when evaluated in SageMathCell. But it works well in a SageMathCloud Worksheet. What am I supposed to do to produce such a matrix interact that works when I embed it in html pages? |

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2015-10-17 17:01:02 +0200 | asked a question | Is this a known bug with integral() I've tried to compute the following integral wth integral() in a SageMathCloud worksheet: $\displaystyle \int_{-\pi/6}^{\pi/6}\frac{\cos x}{1+\sin x}dx$. 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... |

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