1. Find the general solution of (general integral) of the differential equation.
1.27 extgydx = (1 - ex) sec2ydy
 
2. Find the general solution of (general integral) of the differential equation.
2.27 xyy '= 1 + x2 / 1-y2

3. Find the general solution of (general integral) of the differential equation.
3.27 (2x - y) dx + (x + y) dy = 0

4. Find a particular solution of (partial integral) of the differential equation.
4.27 x2y = 2xy + 3, y (1) = -1.

5. Find the general solution of the differential equation.
5.27 y - ytgx + y2cosx = 0

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