List of top Engineering Mathematics Questions on Vector Algebra

If \(\phi\) is a differentiable scalar function, then div grad \(\phi\) is

If \(\mathbf{f} = f_1(y, z) \hat{i + f_2(z, x) \hat{j} + f_3(x, y) \hat{k}}\), then \( \mathbf{f} \) is

If \( \mathbf{a} \) is a constant vector, then \( \text{div}[\mathbf{a} \times (\mathbf{r} \times \mathbf{a})] \) is