Compute the flux of the vector field through the rectangular region shown below, assuming it is oriented as shown and that and .
Figure showing part of a plane intersecting the yz-plane along the line segment between (0,0,b) and (0,a,b), and intersecting the xy-plane along the line segmentn between (a,0,0) and (a,a,0).  The orientation is given by an arrow pointing from the part of the plane upwards with positive slope dz/dx.

flux =