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

Solve these differential equations.

1.22 y′ + xy = x3

2.22 y′ + 3y/x = 2/x3

3.22 xy′′ = y′ + x2

4.22 y′′ − y = 2(1 − x), y(0) = 0, y′(0) = 1

5.22 y′′ − 2y′ + y = ex/√(4 − x2)

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