1. Find the general solution of (general integral) of the differential equation.
1.8 y = (2y + 1) tgx

2. Find the general solution of (general integral) of the differential equation.
2.8 (x + xy2) dy + ydx - y2dx = 0

3. Find the general solution of (general integral) of the differential equation.
3.8 xy = y - xey / x

4. Find a particular solution of (partial integral) of the differential equation.
4.8 cosydx = (x + 2cosy) sinydy, y (0) = π / 4.

5. Find the general solution of the differential equation.
5.8 (2x2ylny - x) y = y

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