ИДЗ Рябушко Вариант 4 КР "Дифференциальные уравнения"

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

Solve these differential equations.
1.4 xdy = (x4 – 2y)dx

2.4 y′ = tgx•tgy

3.4 (1 + x2)y′′ = 3

4.4 2y′′ – y′ = 1 + x, y(0) = 0, y′(0) = 1

5.4 y′′ + y = 1/√cos2x

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