Аналитическая геометрия и линейная алгебра. Умнов А.Е. - 99 стр.

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                         Ï©mÈˈ°« wévqoknlntqnu äȈ¯Ò©                                     A  ¯ÈÏä˯È m[l ° ªãËäËӈÈäÒ
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                          βki , ∀k = [1, l ] , ∀i = [1, n] Ë°ãÒ γ            ji   = ∑ α jk βki , ∀i = [1, n] , ∀j = [1, m] 
                                                                                          k =1
             
             cËς㠈Ȉ¹¯ºÒÏmËËÓÒ«äȈ¯ÒäȈ¯ÒÈ C Ë°ˆ äȈ¯ÒȯÈÏä˯È m[n¹¯Ò
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                                                                       α11 α12                 β11   α11 β11 + α12 β21
                                             C = A            B =                                  =                     
                                                                       α 21 α 22               β21   α 21 β11 + α 22 β21
                                                                                      

                                                                                      
    
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                                                                                            α11 α12
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                                                                                            α 21 α 22                             
                                                                   = α11 β11 + α 21 β12             α12 β11 + α 22 β12        .
                                                                                      

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