12.cos⁡x(1+cos⁡y)dx+sin⁡y(1+sin⁡x)dy=012. \cos x(1 + \cos y) dx + \sin y(1 + \sin x) dy = 0

Mathematics

Problem

12.cos⁡x(1+cos⁡y)dx+sin⁡y(1+sin⁡x)dy=012. \cos x(1 + \cos y) dx + \sin y(1 + \sin x) dy = 0

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