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CONTEXT

                                     Lecture 1 Notion of Ordinary Differential Equations……..6

                                     1.1 Common Notions and Determinations...........................6
                                     1.2  Solving  Cauchy  Task  and         Its   Geometrical
                                 Interpretation………………………………………………....…8
                                     1.3 Solving of Some Equations of the First Order, Untied in
                                 Relation to Derivative…………………………………………11
                                     1.3.1 Equation with the Separated and Separated Variables
                                 and Panders to Them………………………………………….12

                                     Lecture  2  Solving  of  Some  Equations  of  the  First  Order,
                                 That  Get  Untied in Relation to Derivative……………..…….17

                                     2.1 Equation in Complete Differentials Equation….…….17
                                     2.2 Method of Integrating Cofactor………………........…20
                                     2.3 Homogeneous Equations………………………….….24
                                     2.3.1 Equations That Are Taken to Homogeneous…….....28
                                     2.4 Linear Differential Equations of the First Order….….32
                                     2.5 Bernoulli Equation………………………………..…..39

                                     Lecture 3  Differential Equations of Higher Orders….…..46

                                     3.1 Common Notions and Determinations…………….…46
                                     3.2 Differential Equations of Higher Orders Which Assume
                                 the Decline of Order…………………………......................…49
                                                                 (n)
                                     3.2.1 Equations of a Kind    y =f(x)…………………......49
                                     3.2.2     Differential   Equations     of     a     Kind
                                       (k )  ( k  ) 1  (n )
                                 F (x , y  , y  ,...,y  )   0…………………………….……51
                                     3.2.3      Differential     Equation     of  the    Kind
                                 F  (y ,  y  ,  y  ,..., y (n )  )   0 …………………………………...…...56

                                     Lecture  4  Linear  Differential  Equations  of  Higher  Orders
                                 (elements of general theory)…………………………….…….61



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