Then we can always say that the three components x components will be or rather we will put it in this way, I will come to this a little later better. So, now, this one we call this as the continuity equation, if this is the continuity equation then what will happen if rho is t rho if the fluid is incompressible. if the fluid is incompressible Then we have d rho by d t equal to 0, once d rho by d t is 0 then we have divergent of q bar that is 0. So, that this is what the equation of continuity for continuity for incompressible fluid. So, this becomes the equation of continuity for incompressible fluid.