Which of the following expressions are meaningful?

MATHEMATICS · Multi-part · CBSE · Mathematics · Vector Algebra · Vector Algebra

Problem

Which of the following expressions are meaningful? (a)

\mathbf{u} \cdot (\mathbf{v} \times \mathbf{w})

(b)

(\mathbf{u} \cdot \mathbf{v}) \cdot \mathbf{w}

(c)

(\mathbf{u} \cdot \mathbf{v}) \mathbf{w}

(d)

\mathbf{u} \times (\mathbf{v} \cdot \mathbf{w})