Is the differential equation y′=x2yy' = x^2 yy′=x2y separable?
Yes, it can be written as 1ydy=x2dx\frac{1}{y} dy = x^2 dxy1dy=x2dx
Yes, it can be written as dy=x2ydxdy = x^2 y dxdy=x2ydx
No, it is not separable
Only if y=0y=0y=0