Differential Equation

[zooba]

will actually this integration is part of a differential equation which it is as follows:

(x cos(y) - y sin(y))dy + (sin(y) + y cos(y))dx = 0

 

[zooba]

is there a sulotion to next differential equation

(x cos(y) - y sin(y))dy + (sin(y) + y cos(y))dx = 0