Let I denote the gravitation intensity at any point,

As we know, \(\vec{i}=-\left[\frac{\partial v}{\partial x} \hat{i}+\frac{\partial v}{\partial y} \hat{j}+\frac{\partial v}{\partial z} \hat{k}\right]\)

\(\Rightarrow \vec{I}_{(2,2,2)}=-[-\hat{i}-\hat{j}-\hat{k}]=\hat{i}+\hat{j}+\hat{k} \,N / kg\)