Seatwork: Obtain the general solution of the following differential equations 1. (xy² + x) dx + (x²y - y) dy = 0 ans: (x²-1)(y² + 1) = c 2. dx = t (1 + t²) sec²x dt ans: 2x + sin2x = (1+ t²)² + c 3. y' y sec x = ans: y = c(sec x + tan x) 4. xv' (2v- 1) = v(x - 1) ans: x + 2y + c = In (xv)

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