Exercise 3 Find the General Solution of the following differential equations. If boundary conditions are given, find also the Particular Solution. 1. xyy' = y' + 1 { when x = 2, y = 3 2. y' = 4 y x(y - 3 ) 3. ydx - 4dy = x2 dy 4. th dr + 2rdt = rtdt + +3dr ; whent = 2,r = e 5. cos3 x dx = tan y dy