Pregunta: Solve the differential equation: (2xy-sinx)dx +(x2-cosy)dy=0.

Integrate both sides.
Integrate each side with respect to its respective variable:

$\int (2\mathrm{x}\mathrm{y}-\sin \mathrm{x})\mathrm{d}\mathrm{x}=\int \cos \mathrm{y}\mathrm{d}\mathrm{y}$

Evaluate the inte...