As MathLib.js is a JavaScript Library, the demos will only work if you have JavaScript enabled. If you need help enabling JavaScript, please have a look at these explanations.
This demo shows MathLib's ability to handle matrices. MathLib can convert content MathML and the MatLab matrix notation into matrices. You can edit the input. To apply the changes click somewhere on the page.
The trace is and the rank is .
The reduced row echelon form is: