ALGEBRA 1 Version 2009
Revised and highly enlarged.
ALGEBRA 2
ALGEBRA 3
ALGEBRA 4
GEOMETRY 1
ELECTRICITY 1
ELECTRICITY 2
ELECTRICITY 1&2
OPTICS 1
OPTICS 2
MECHANICS 3
 
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 ALGEBRA 3
 
  free extract of chapter : 12

     12. Definition and properties of the barycenter. Point and vector notations. Applications.
            3. The barycenter enables us to calculate with points.
            11. Isobarycenter of the tetrahedron.

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