2018-12-01 21:11:35 +0200 | received badge | ● Popular Question (source) |

2017-01-05 19:47:54 +0200 | asked a question | identity matrix The square root of -1 is represented by I (as well as the usual i). The identity matrix of size n is represented by identity_matrix(n). It seems to me that a better choice would be I(n), but that isn't there. Why is happening here? |

2016-06-11 21:21:40 +0200 | received badge | ● Student (source) |

2016-06-11 09:38:08 +0200 | asked a question | numerical_integration returns two numbers. What is the second? The command numerical_integral returns two numbers. In the documentation, under "numerical integration", the second is called an "error bound", and later on it is called an "error estimate". What is this number, and precisely how is it defined? |

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