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Author

Julia Goedecke

Project

Linear Algebra 1st year

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From users who are members of Linear Algebra 1st year :

Julia Goedecke

said

Ready to use

4 years, 2 months ago

History

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Julia Goedecke 4 years, 2 months ago

Gave some feedback: Ready to use

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Julia Goedecke 4 years, 2 months ago

Saved a checkpoint:

Something has broken... But I didn't change anything.

Restore this checkpoint

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Julia Goedecke 4 years, 2 months ago

Gave some feedback: Has some problems

○

Julia Goedecke 4 years, 2 months ago

Gave some feedback: Has some problems

○

Julia Goedecke 4 years, 2 months ago

Gave some feedback: Needs to be tested

○

Julia Goedecke 4 years, 3 months ago

Gave some feedback: Ready to use

○

Julia Goedecke 4 years, 3 months ago

Saved a checkpoint:

Now cleaned up marking algorithms, and added the feature that the system at the beginning can't be submitted if some entries are invalid or empty.

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Julia Goedecke 4 years, 3 months ago

Saved a checkpoint:

Checkpoint before cleaning up the custom marking algorithms, to make it clearer what i have changed.

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Julia Goedecke 4 years, 4 months ago

Saved a checkpoint:

Changed the coding of "swap rows" so that if no entry is given, it takes the original row again in that place.

Restore this checkpoint

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Julia Goedecke commented 4 years, 4 months ago

Used new "bareMatrices" flag to display the augmented systems as they should be.

○

Julia Goedecke 4 years, 4 months ago

Gave some feedback: Needs to be tested

○

Julia Goedecke commented 4 years, 4 months ago

Changed visibility of options so that only options that are possible within given matrix size are visible. Made it possible to leave blanks in the multiplication of rows if they are to stay the same.

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andrew tonks commented 4 years, 4 months ago

Issue happens with "real life" examples but the following contrived one is the smallest I can find

https://numbas.mathcentre.ac.uk/media/question-resources/bug.png

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Julia Goedecke commented 4 years, 4 months ago

The "some problems" is that when you calculate with 1/3s, you sometimes get \(0\pi\) rather than \(0\).

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Julia Goedecke 4 years, 4 months ago

Gave some feedback: Has some problems

○

Julia Goedecke 4 years, 4 months ago

Published this.

○

Julia Goedecke 4 years, 4 months ago

Gave some feedback: Ready to use

○

Julia Goedecke 4 years, 4 months ago

Created this.

Name	Status	Author	Last Modified
Gaussian elimination calculator	Ready to use	Julia Goedecke	18/04/2022 17:56
copy of Gaussian elimination calculator	Ready to use	Julia Goedecke	25/08/2021 12:57
Gaussian elimination calculator	Ready to use	Julia Goedecke	28/04/2022 12:51
Inverse algorithm calculator	Ready to use	Julia Goedecke	25/04/2022 08:55

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This question is used in the following exam:

Test - Practice Exam 1 by Tim Wilkinson in Tim's workspace.

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Checkpoint description

Julia Goedecke 4 years, 2 months ago

Julia Goedecke 4 years, 2 months ago

Julia Goedecke 4 years, 2 months ago

Julia Goedecke 4 years, 2 months ago

Julia Goedecke 4 years, 2 months ago

Julia Goedecke 4 years, 3 months ago

Julia Goedecke 4 years, 3 months ago

Julia Goedecke 4 years, 3 months ago

Julia Goedecke 4 years, 4 months ago

Julia Goedecke commented 4 years, 4 months ago

Julia Goedecke 4 years, 4 months ago

Julia Goedecke commented 4 years, 4 months ago

andrew tonks commented 4 years, 4 months ago

Julia Goedecke commented 4 years, 4 months ago

Julia Goedecke 4 years, 4 months ago

Julia Goedecke 4 years, 4 months ago

Julia Goedecke 4 years, 4 months ago

Julia Goedecke 4 years, 4 months ago

Error in variable testing condition

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Generated value:

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