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Dx y. X 2dy y 1 DX 0. Sqrt(5+y^2)DX+4(X^2y+y)dy=0. Dy/DX + Y/X = (X-1)^(1/2). (1+2y)x DX +(1+X^2)dy=0.
X 2dy y 1 DX 0. Sqrt(5+y^2)DX+4(X^2y+y)dy=0. Dy/DX + Y/X = (X-1)^(1/2). (1+2y)x DX +(1+X^2)dy=0.

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