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2013-08-15 17:39:10 +0200 | answered a question | Computing derivatives You are perfectly right. I defined sqrt as math.sqrt at the very beginning of my session. I completely forget that this is still included. Thanks a lot! |

2013-08-15 13:46:42 +0200 | asked a question | Computing derivatives Hey guys, I dont know where the problem is, but sage (5.10 here) doesnt compute easy derivatives as e.g. This leads to the following error: TypeError: unable to simplify to float approximation Whats the problem here? |

2013-08-05 16:08:03 +0200 | asked a question | mod 1 arithmetic Hi all, is it possible, to do simple mod 1 evaluations? For example, Mathematica outputs but (or similar attempts) in Sage result in Cheers, Markus |

2013-04-15 14:11:02 +0200 | received badge | ● Student (source) |

2013-04-12 12:32:51 +0200 | asked a question | Quadratic number fields Hello! I try to implement an inclusion test, of which I thought it must be quite simple, but until now I cannot figure out how to do it properly. Problem: Given any element x, test if x is included in some quadratic number field and return true/false. I tried the following: Here, the answer is 'no' or 'false' which is obviously wrong, so I assume I'm doing something completely wrong. What do I have to change? |

2013-02-13 14:53:25 +0200 | answered a question | Disabling y-axes in 2-D plot The problem seems to be that I already have a very complicated plot, so I cannot apply matplotlib methods to that (at least I wouldnt know how). The workaround you mentioned would be enough for me, but actually it doesnt work, because the white x-axes partly lies over the horizontal arrow and the y-axes lies over parts of the plot :/ I really thought that disabling axis seperately is a standard feature. Maybe I switch back to another CAS for this special plot :( Thanks anyway for your answer. |

2013-02-13 10:55:04 +0200 | asked a question | Disabling y-axes in 2-D plot Hi all, is it possible to switch of the y-axes seperately in a 2-D plot? The intuitive way plot(exp,axes=[True,False]) is the very same as plot(exp,axes=True) Greetings, Markus |

2013-02-06 13:51:53 +0200 | asked a question | No fillalpha after eps export? Hey guys, this is a slightly modified example from the sage help pages: (plot(1+e^(-x^2), xmin=-2, xmax=2, ymin=0, ymax=2.5, fill=0.5, fillcolor='green', fillalpha=0.5)).save('t.eps') It shows an exponential function which is filled from below by green color. The option fillalpha=0.5 should make this filling slightly transparent, which works perfectly when exporting to pdf, but repdroducably fails when exporting to eps. Is there any workaround? |

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