Question: determine whether (sinxsiny-xe y ) dy = ( e y + cosxcosy )dx and ( x-y )/( x 2 + y 2 )dx +( x+y

determine whether (sinxsiny-xey ) dy = ( ey + cosxcosy )dx and ( x-y )/( x2 + y2)dx +( x+y )/( x2 + y2)dy = 0

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