Дифференциальные уравнения. Теоремы, примеры, задачи (190,00 руб.)

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                                       

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                                                                                                                                                                                                                                                                                                                          Ч -

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Стр.3

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  y˙ = Ay, A = eAt; α ∈ R, y˙ = By +f(y) f(y) = colon(y2 3, y2 1, y3 l > 0, y′′ +2y = 2 cos 2t, y = y(t), y′(0) = 0, y′(l) = 0, t ∈ [0, l] 2). B = A−βE, E   2 −1 0 3 −1 −1 1 0 −1   y′x3 sin y +2y = xy′. y′′ +4ay′ −(4a2 +1)y = 0 a, x→−∞.

Стр.4

                                                                                                                                                                                                                                                                                                                                                                                                                                                    y˙ = Ay, A = eAt;    α ∈ R, y˙ = By +f(y) B = A+αE, E f(y) = colon(0, y1y2y3, y1y3 sin y2 l > 0, 2). y′′ +4y = sin 2t, y = y(t), y(0) = 0, y′(l) = 0, t ∈ [0, l]     1 −1 −1 2 −2 −2 −1 1 1     y′ +2y = exy2. y′′ +4ay′ +(4a2 −1)y = 0 a, x→−∞.

Стр.5