1. Find a particular solution of a linear homogeneous differential equation.
1.3 y- y = 0, y (0) = 0, y (0) = 0, y (0) = -1.

2. Solve the system of differential equations in two ways: a) information to higher order differential equations; b) using a characteristic equation.
2.3 x '= - x + 8y, y' = x + y

3. Solve the differential equation by variation of arbitrary constants.
3.3 y- 4y + 5y = e2x / cosx

4. Solve the following problems.
4.3 Write the equation of curves with the property area of the trapezoid bounded by the coordinate axes, tangent to the curve and the perpendicular from the point of tangency on the x-axis, is constant, equal to 3a2

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