Where f.i ds example 31. evaluate above the xy-plane x* +y +z = a. sol. i is given by f- 2xi+2y j+2z k and s is the surface of the sphere xi +yj + 2zk n a so fi

where F.i ds Example 31. Evaluate above the xy-plane x* +y +z = a. Sol. i is given by F- 2xi+2y j+2z k and S is the surface of the sphere xi +yj + 2zk n a So Fids= 2+2y+2/) x Oy Z 2a dx dy ya-x-y Let So X = COS dx dy=p dp do y sin o F-h ds-20 Pdp do -p -2u 2n(-Ja-p) =4 Ta