Let Find the Divergence Of $\vec { F } .$

Essay

Let $\left. { \vec { F} } = \left( y ^ { 2 } + 4 x \cos z \right) \right) \vec { i } + \left( - z ^ { 3 } \right) \vec { j } + \left( z ^ { 2 } - 4 x y \right) \vec { k }$ Find the divergence of $\vec { F } .$