2021-03-21 19:34:54 +0200 | received badge | ● Popular Question (source) |

2015-05-22 18:22:50 +0200 | received badge | ● Famous Question (source) |

2014-12-11 14:48:54 +0200 | received badge | ● Taxonomist |

2014-06-29 20:34:11 +0200 | received badge | ● Famous Question (source) |

2014-06-29 20:34:11 +0200 | received badge | ● Notable Question (source) |

2014-06-29 20:34:11 +0200 | received badge | ● Popular Question (source) |

2013-10-24 06:50:00 +0200 | received badge | ● Notable Question (source) |

2013-04-23 05:20:43 +0200 | received badge | ● Popular Question (source) |

2012-02-27 13:54:18 +0200 | asked a question | proving inequalities with SAGE? 2sqrt(n+1)-2sqrt(n) < 1/sqrt(n) < 2sqrt(n)-2sqrt(n-1) How to prove this inequality? (its our homework with only sage.) any tips? Please do not close it again as I have no other place where I can ask my question. And I have to use the software. Thank you. |

2012-02-27 13:26:44 +0200 | asked a question | How to get 'true' or 'false' for inequality? For equality, I have to type = twice. Like this: == . But what about inequalities? |

2012-02-27 13:23:08 +0200 | asked a question | Proving inequalities 2 How to prove this inequality? |

2012-02-27 12:11:35 +0200 | received badge | ● Editor (source) |

2012-02-27 12:10:41 +0200 | asked a question | Inequalities, solving problems 1.) 2!·4!·...·20! 1!·3!·...·19! (this is a fraction) I need to solve this in a closed form. the question is that we need to find out if it is better to solve in its original form or we need to 'help it a little'? Now I typed down the whole exercise. The other problem: 2./a) 1+ 1/2 + 1/3 +...+ 1/n >10 We need positive n that works for this. 2./b) We need the smallest n. (not only the answer, we need to prove why that's the answer) I wrote down all the questions for the exercises. The whole thing is in a sage document. We can upload only sage files to the server too. The teacher is tricky by the way. The subject is called Solving mathematics problems with sage. Sadly I cannot upload pictures because I'd need more karma. I can try to do this in the analytical way, and type it in sage, but any help or tips would be great with the proof too.. :) I have no idea what my teacher wants really. |

2012-02-26 16:05:55 +0200 | asked a question | Easy (beginner) sum problem:"need a summation variable"? My native language is not english but I try my best to make you understand the problem. I'd like to: from k=1 to n+1 sum k^2 But when I try to solve it with sage, it gives me an error. (k,n)=var('k,n') show(sum(k,k^2,1,n+1)) It has a problem with k^2. How to solve it? Many thanks. |

Copyright Sage, 2010. Some rights reserved under creative commons license. Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.