I have
x,y, dx, dy= var("x, y, dx, dy");
def iD(f): return diff(f, x)*dx + diff(f,y)*dy;
iD(x^3*y^5)
returns
5*dy*x^3*y^4 + 3*dx*x^2*y^5
is there a way to have it return the differentials always at the end as in
5x^3y^4dy + 3x^2y^5dx
thank you