J = ∫ √(1+sin2x) dx= (1/2)∫ √(1+sint) dt,t=2xLet y = 1+sint then dy = costdt = √y√(2-y)dtJ = ∫ √y * 1/[√y√(2-y)] dy= ∫ 1/√(2-y) dy= -∫ d(2-y)/√(2-y)= -√(2-y) + C= -√[2-(1+sin2x)] + C= ...