ИДЗ Рябушко Вариант 19 КР "Дифференциальные уравнения"

Test "Differential Equations" (2 hours). 345 p.

Solve these differential equations.

1.19 y′ + ytgx = 1/cosx

2.19 xy′ = y – xy

3.19 xy′′ − y′ = x2ex

4.19 y′′ + 4y = 5ex, y(0) = 0, y′(0) = 1

5.19 y′′ − y′ = 1/(1 + ex)

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