Try to avoid tiny/huge values in matrix computed

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@32231 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
typo

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@32232 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e