Аналитическая геометрия и линейная алгебра. Умнов А.Е. - 67 стр.

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c È Ï  Ë ã                                                      71
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                                    A1 = λ A2 ; B1 = λ B2 ; C1 = λ C2 ; D1 = λ D2 



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