Find the curl of the vector field F = < 52 cos(x), 6z sin(x), 4z > curl F= 7 + k

A net is dipped in a river. Determine the flow rate of water across the net if the velocity vector field for the river is given by v=(x-y,z+y+7,z2) and the net is decribed by the equation y=1-x2-z2, y20, and oriented in the positive y- direction. (Use symbolic notation and fractions where needed.)

F = (x² - y)i + + (4z)j + (x²)k Find the curl (curl calculation) of the vector field?