Find the function M(x, y) such that M (x, 0) = eª and the differential equation M(x, y) dx + (sin x cos y - xy - e-)dy = 0 is exact. O sina sin y + y² + ex cos x sin y + y² + e- 2 cos x sin y - y² + e-ª cos a sin y-y² + é sin x sin y y² +e=² x

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