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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 versionPlease 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.