The gradient of a scalar function, \(f\), is defined as:

\[ \vec{abla} f \equiv \hat{i} \frac{\partial f}{\partial x}+\hat{j} \frac{\partial f}{\partial y}+\hat{k} \frac{\partial f}{\partial z} \] Show that \((\vec{V} \cdot \vec{abla}) f=\vec{V} \cdot(\vec{abla} f)\)