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2019-06-22 17:17:13 +0100 | asked a question | Best way to really simplify ugly formulas As a casual user of sagemath I am always struggling to get my formulas simplified: The result has some potential for simplification, at least in terms of what think simplification might be. Can someone provide some hints as to how to get better results than from |

2018-08-27 07:37:16 +0100 | commented answer | Simplify vector vs. its norm The minus sign in front of the definition of mrot is wrong in my original post, but given that originally I got a spaghetti plate full of formula, (-1, 0, 0) is great and easily fixed by removing the minus :-) |

2018-08-26 19:58:04 +0100 | answered a question | Simplify vector vs. its norm Here is how it works. In fact it is only slightly different from the above, but the two things that helped were Multiplying |

2018-08-26 19:06:35 +0100 | asked a question | How to help sage to group sum elements When I run sage returns $$\frac{a^2+b^2+\sqrt{a^2+b^2}}{\sqrt{a^2 + b^2}} .$$ I cannot get it to simplify this to $\sqrt{a^2+b^2}+1$. How can I help sage to simplify the fraction? I assume it has difficulties to notice that it just needs to group the numerator in a certain way. I tried to help out with but this just results in $(a^2+b^2 +\sqrt{X})/\sqrt{X}$. |

2018-08-26 18:48:16 +0100 | commented answer | Simplify vector vs. its norm Well, this is because |

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2018-08-25 22:40:11 +0100 | asked a question | Simplify vector vs. its norm In the following I compute the matrix |

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2018-01-28 18:16:27 +0100 | asked a question | What is the opposite of log_expand log_expand does converts log(x*y) to log(x)+log(y). Is there a function which explicitly reverts this? |

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2015-03-29 17:16:10 +0100 | asked a question | declare name of derivative After defining a function depending on one variable as Then v.diff() displays as Rather I would like to teach Sage that the derivative of v is a such that v.diff() is displayed as t↦a(t). Can this be done? |

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