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2015-03-19 08:12:49 -0500 | asked a question | how do I revert to a previous version in history I want revert to a previous version of a worksheet in SMC. I already found it in the history, now how can replace the current version with an older revision? |

2015-03-19 08:09:42 -0500 | asked a question | What does the "Math processing error" red button means I noticed that while I was running some code in a wroksheet in sagemathcloud, a button with red letters saying: "Math processing error" appeared in the toolbar. when I hover over it, a tooltip appears saying "define symbolic variable". If I press the button, the following is inserted in the current cell: what does this mean? I didn't get any error messages in my code |

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2014-12-04 09:19:13 -0500 | asked a question | Equivalent to Wolfram's Alpha "alternate forms" In Wolfram's Alpha, when you enter some symbolic expression it will offer you many alternate forms, for example: http://www.wolframalpha.com/input/?i=... is there a way to get similar results in Sage? |

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2014-10-09 14:10:29 -0500 | asked a question | Finding Lyapunov functions in Sage Is there a way to find Lyapunov functions candidates for a system of ODEs? see for example: http://www.exampleproblems.com/wiki/i... I know I can simply "do the math" given I have a candidate function, but I wonder if there is any way to quickly explore potential candidates. |

2014-08-06 09:25:53 -0500 | commented answer | How to use R with Sage? Didn't work for me on Sage 6.1.1. But I found to be due to a bug in the `png` function on R 3.0.2 |

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2013-09-05 10:37:37 -0500 | asked a question | Sage starts from console but not from the app menu on OSX I have installed sage 5.11 but the server does not start from the app menu. However, when I start it from the console, everything works. any hints? |

2013-08-14 08:45:08 -0500 | marked best answer | Interpreting solution of a system of linear equations A free parameter, automatically set when the solution is not unique. It should be r1 when you evaluate the cell the first time. Further evaluations increment to r2, r3, .... |

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2013-08-13 04:27:35 -0500 | asked a question | Interpreting solution of a system of linear equations Hi I am solving the following system: and I get the following solution: what is |

2013-07-22 05:39:59 -0500 | answered a question | How do I install python modules, or use a different version of python? (with sage) Another possibility, if your package is hosted in the python package index (pypi.python.org), is to run the following command: |

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