# Question: determine whether the differential equations are exact or not exact...

###### Question details

Determine whether the differential equations are exact or not exact. If it is exact, find a solution of the form F(x,y)=C, where C is a constant.

a) (−4xy2+y)dx+(−4x2y+x)dy=0 is exact. I got yx=C but that was wrong

b) (−(x4+2y))dx+(y4)dy=0