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--- Introduction ---
is an exercise on the multiplication of matrices:
one knows that if is a square matrix of size ,
then there exist two matrices and of the same size,
one is upper triangular, the other lower triangular, such that
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Description: find two triangular matrices whose product is a given square matrix. This is the main site of WIMS (WWW Interactive Multipurpose Server): interactive exercises, online calculators and plotters, mathematical recreation and games