!! used as default html header if there is none in the selected theme.
This exercise gives you a matrix (presented under different forms: vectors, linear system), some elements of which are missing. You have to find the values of the missing elements, such that the matrix has a rank smaller than its size.If you are expert, you may choose parameters of the exercise in a detailed menu.
This exercise originates from an idea of Frédéric Pham.The most recent version
Please take note that WIMS pages are interactively generated; they are not ordinary HTML files. They must be used interactively ONLINE. It is useless for you to gather them through a robot program.