Content
Questions for first year linear algebra. From basics on vectors and matrices, via solving linear systems, inverse matrices and determinants, vector spaces, bases, linear maps, eigenvalues/eigenvectors, inner products.
In development: we're starting at the beginning :-) More questions will appear through the year 2020/21.
Project activity
Julia Goedecke copied Adding vectors to Adding and subtracting vectors 4 years, 4 months ago
Julia Goedecke published Adding vectors 4 years, 4 months ago
Julia Goedecke on Adding vectors 4 years, 4 months ago
Gave some feedback: Needs to be tested
Julia Goedecke copied Adding matrices of different sizes to Adding vectors 4 years, 4 months ago
Julia Goedecke published Adding matrices of different sizes 4 years, 4 months ago
Julia Goedecke on Adding matrices of different sizes 4 years, 4 months ago
Gave some feedback: Needs to be tested
Julia Goedecke copied Adding 2x2 matrices to Adding matrices of different sizes 4 years, 4 months ago
Julia Goedecke published Adding 2x2 matrices 4 years, 4 months ago
Julia Goedecke on Adding 2x2 matrices 4 years, 4 months ago
Saved a checkpoint:
Fairly simple, so should be fine. I made it just one part.
Julia Goedecke on Adding 2x2 matrices 4 years, 4 months ago
Gave some feedback: Ready to use
Julia Goedecke on Gaussian elimination calculator 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.
Julia Goedecke commented on Gaussian elimination calculator 4 years, 4 months ago
Used new "bareMatrices" flag to display the augmented systems as they should be.
Julia Goedecke on Gaussian elimination calculator 4 years, 4 months ago
Gave some feedback: Needs to be tested
Julia Goedecke commented on Gaussian elimination calculator 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.
andrew tonks commented on Gaussian elimination calculator 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
Julia Goedecke commented on Gaussian elimination calculator 4 years, 4 months ago
The "some problems" is that when you calculate with 1/3s, you sometimes get \(0\pi\) rather than \(0\).
Julia Goedecke on Gaussian elimination calculator 4 years, 4 months ago
Gave some feedback: Has some problems
Julia Goedecke published Gaussian elimination calculator 4 years, 4 months ago
Julia Goedecke on Gaussian elimination calculator 4 years, 4 months ago
Gave some feedback: Ready to use
Julia Goedecke created Gaussian elimination calculator 4 years, 4 months ago
Queues
Item status
| Ready to use | 295 |
| Should not be used | 3 |
| Has some problems | 4 |
| Doesn't work | 1 |
| Needs to be tested | 8 |
| Draft | 68 |
