Is div$($F$)$ positive, negative, or zero at P$?$ Explain.

div$($F$)$ is $---$Select$---$ positive negative zero because the vectors that start near P are $---$Select$---$ longer than the same length as shorter than those that end near P$.$

$($b$)$

Determine whether curl$($F$)=0.$ If not, in which direction does curl$($F$)$ point at P$?$