1.

DE(sinx.siny -xey) dy= (ey+cosx.cosy)dx for exactness and solve it if it is exact ​

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Answer:

(c) Trivial SOLUTION: If y = 0 is a solution to a DIFFERENTIAL equation ... Check the exactness by ... (1 - sin x tan y) dx + (cos x sec2 y) dy = 0 ... 2 sinh x COSH x cos y dx - sinh2 x sin y dy = 0.



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