$,$ A velocity field is given by the expression vec$($V$)=$xhat$()+$x$($x$-1)($y$+1)$hat$().$

Compute the streamline passing through the point $(0,0)$ by integration. Include arrow

heads on the streamline to show the flow direction. Plot on a grid for x between $-1$ and

$3,$ and y between $-1$ and $3.$ If any stagnation points exist, identify them.