Аналитическая геометрия и линейная алгебра. Умнов А.Е. - 27 стр.

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c È Ï  Ë ã                                                      31
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                                                                                                                           λ ξ 2 = λξ 2 
                                                                                                                             ξ3    λξ 3
                                                                                                                                          
                                                                                                                                          
                  

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