determine whether the equation is exact or not
((e^2)sin(y)−2ysin(x))−(3x−(e^x)sin(y))y′=0
let M(x,y)=(e^x)sin(y)−2ysin(x)
N(x,y)=−3x+(e^x)sin(y)
simplify and we get My(x,y)=(e^x)cos(y)−2sin(x)
Nx(x,y)=−3+(e^x)sin(y)
we can conclude that My is not equal to Nx, therefore the diffrentiation equation is not exact
