Chapter 15.7, Problem 3QCE

If $\text{F}\left(x,y,z\right)$ is the velocity vector field for a steady-state incompressible fluid flow, then a point at which div F is positive is called a $\text{\_\_\_\_\_\_\_\_\_}$ and a point at which div F is negative is called a $\text{\_\_\_\_\_\_\_\_\_}\text{.}$ The continuity equation for an incompressible fluid states that $\text{\_\_\_\_\_\_\_\_\_}\text{.}$