12/12.17 Vector Analysis

Condition: for a given vector field \ (\ bar {f} = \ left (x-y ^{2}, \ tan ^{-1} \ left (\ frac {y} {x} \ right), \ sin ^{-1} \ left (\ frac {X z} {y} \ right) \ right) \) Calculate \ (\ Operatorname {Div} \ Bar {F} \) at the point \ ((1; 1; 0) \).